Travel, Networks, and the Testability of Acts

"It is the one link between the Apostle's career and general history that is accepted by all scholars." -- Jerome Murphy-O'Connor on Gallio, 1983¹

"This is of course coincidental, for he has to use arbitrary averages and approximations as the basis for rigid calculation." -- Colin Hemer on James Smith's shipwreck arithmetic, 1989²

Summary

The second half of Acts is a travel story.  Paul crosses Cyprus, Asia Minor, Macedonia and Greece, sails to Jerusalem, and is shipped as a prisoner to Rome.  Along the way the author names roads, ports, winds, islands, governors and the titles of town officials.  Much of this can be checked against things Acts did not write:  inscriptions, coins, road books, Roman histories, Josephus, and Paul's own letters.  This article runs those checks and asks what each one actually proves.

It sorts every check into one of six kinds, because they prove different things:  (1) a correct setting, such as the right title for a town's magistrates;  (2) an identified person, known from another source;  (3) an externally reported event, with literary independence assessed before counting it as a second witness;  (4) a plausible route, a journey that the roads, seas and seasons allow;  (5) a chronological constraint, which limits when something could have happened;  and (6) a conflict, where another source disagrees.  A correct setting is real evidence that the author had good information about that world.  It does not establish that a speech was given as written, that a miracle happened, or that the author was Paul's companion.

1. Many titles and offices check out, but most cannot date Acts.  Acts calls the governors of Cyprus and Achaia "proconsuls," which is right:  Cyprus was a senatorial province from 22 BC, and Achaia was returned to the Senate in AD 44.²²  It calls the magistrates of Thessalonica "politarchs," a title known chiefly from inscriptions rather than literary texts.  A search of the Packard Humanities Institute's database of Greek inscriptions on 21 October 2026 returned 85 records, 74 of them from Macedonia and 31 from Thessalonica itself, with Thessalonian examples running from about 200 BC to about AD 250.³  So the title is right for the city, but it was in use for some 450 years and cannot date Acts.  Asiarchs at Ephesus, a "town clerk" there, and a "first man" on Malta are also attested, some only once or only later.  The proconsul Sergius Paulus of Cyprus has never been securely found in an inscription.  The Cypriot stones claimed for him have his name or his office restored by editors, and a Lucius Sergius Paullus at Rome cannot be tied to Cyprus.⁴²

2. Gallio is the one firm date.  A broken letter of the emperor Claudius, carved at Delphi, names "Iunius Gallio, my friend and proconsul."  The letter is usually dated between January and August AD 52, from Claudius' acclamation count;  the lower bound is inferred rather than securely preserved in his titles.⁵¹  Proconsuls served one year from about 1 July, so Gallio governed Achaia in 51-52, or less probably in 50-51.¹  The inscription does not mention Paul.  If the hearing of Acts 18:12-17 happened, Paul was in Corinth during Gallio's year, and most other dates in Paul's life are reckoned from that one by counting intervals, which adds uncertainty at each step.

3. The roads and stations are real, and some are attested before Paul.  Strabo, writing about AD 23, describes the Egnatian Way as measured and marked with milestones.⁶  Two late Roman road books list Philippi, Amphipolis, Apollonia and Thessalonica in the order of Acts 16:12-17:1, about 100 Roman miles in three stages.⁷⁷  Cicero in 59 BC wrote letters from Appius' Forum and Three Taverns, the two places on the Appian Way where Roman Christians met Paul in Acts 28:15.⁸  These show the itinerary is geographically sound.  They cannot show that Paul walked it.

4. The voyage of Acts 27 fits the sea, the season and the ships, but the famous arithmetic proves less than claimed.  A grain ship of Alexandria, a late sailing after the autumn Fast, a northeast gale off Crete, a drift west to Malta and an Alexandrian ship wintering there all fit what Pliny, Seneca, Lucian and Josephus say about Mediterranean sailing.⁹¹⁰¹¹  James Smith, a yachtsman, calculated in 1848 that a ship drifting before that wind from Cauda would reach St Paul's Bay, Malta, in "thirteen days, one hour, and twenty-one minutes."¹²  His geometry checks:  the course and distance can be reproduced.  But his drift rate came from two naval captains' estimates, and on their own range of answers the same drift takes anywhere from about 10 to 26 days.¹³  Fourteen days fits comfortably.  It does not single out Malta.

5. The "we" passages are real data that do not decide authorship.  First-person plural narration starts each time with a voyage, but continues on land at Philippi, Troas, Caesarea and Jerusalem, and drops out during the wreck itself.  Robbins' theory that it is a sea-voyage convention faces substantial objections from the comparison texts.¹⁴¹⁵  The evidence fits a participant, a participant's notes, or a writer who wanted to appear to be one.  It does not choose among them.

6. Paul's letters both confirm and conflict.  The letters and Acts share more than a dozen named companions, including different forms of the same name (Silas and Silvanus, Priscilla and Prisca).  This is compatible with independent information, but does not exclude an author adapting the letters.  Both tell of Paul's escape from Damascus in a basket over the wall.¹⁶  But Galatians 1-2 and Acts 9-15 count Paul's visits to Jerusalem differently.  Either Galatians 2 is the council of Acts 15, and Acts adds a visit Paul seems to deny, or Galatians 2 is the famine visit of Acts 11, and the conference has to fit before Agrippa's persecution or Acts' order must be loose.  Each solution has a cost, and the evidence does not settle which is right.

7. Josephus supplies a substantial event parallel and a real chronological problem.  Both accounts place Agrippa I's fatal affliction at Caesarea after public praise as a god.  Josephus adds a silver robe, an owl and five days of pain;  Acts has royal robes, an angel and worms.¹⁷  This is agreement about an event, not just a setting.  Whether it supplies two independent traditions remains disputed:  Mason argues that Acts adapted Josephus, and differences in detail do not exclude that.¹⁸  But Acts 5:36-37 makes Gamaliel cite a rebel Theudas before Judas the Galilean, while Josephus puts his Theudas about forty years after Judas, and about a decade after Gamaliel's speech.¹⁷¹⁸  The best defence is that Acts means a different, otherwise unknown Theudas.  That is a hypothesis.  The Egyptian prophet raises a different issue:  Acts gives 4,000 followers against 30,000 in Josephus' War.  The latter's Antiquities gives 400 killed and 200 captured, which are different quantities and do not decide between the two totals.¹⁷¹⁹

8. The usual date of AD 49 for Claudius' expulsion of the Jews is weaker than often stated.  Suetonius reports the expulsion without a year.  The year comes from Orosius, about AD 417, who cites a passage not located in Josephus' surviving works.²⁰²  Dio says that in AD 41 Claudius did not expel the Jews but banned their meetings.²¹  Acts 18:2 fits a date in the late 40s, but it cannot be used to prove that date and then be confirmed by it.

Verdict:  The comparisons examined here support many details of Acts' Roman setting, in a few places with considerable precision.  That is the record of an author with good information about the eastern provinces of the 50s, whether his own, his sources' or both.  It makes Acts a usable historical source, to be weighed like any other.  It does not verify the speeches, the miracles, or the author's presence, and it does not erase the Theudas problem or the tension with Galatians.  Most of the narrative, including almost everything Paul says and does, has Acts as its only witness.

Part 1: What can be tested, and what a test can show

Acts is not one kind of claim.  It reports the title of a town council, the direction of a wind, the name of a governor, a riot in a theatre, a speech before philosophers, and a man raised after a fall from a window.  Some of these can be compared with other evidence and most cannot.  Mixing them produces two familiar mistakes.  One treats a correct title as if it verified the whole chapter around it.  The other treats a theological purpose as if it made every checkable detail worthless.  The six kinds of check in the Summary keep them apart.

Which items are tested here.  The following comparisons cover several kinds of evidence, including apparent conflicts.  They are a case study, not a complete census of Acts' claims from which an overall accuracy rate can be calculated:

1. Civic and provincial titles in chapters 13-28, together with commonly cited comparisons involving Philippi's colonial status, Athens' altar, Julius' cohort and Malta's leading man. The table includes offices, institutions and personal identifications, which are different units of evidence. Judean governors, high priests and the council belong to the sibling article Roman Law and Crucifixion, which also covers citizenship, appeal and flogging.
2. Every place on the land routes of Acts 16-17 and 28 that a surviving road book or road description also names.
3. The sea voyage of Acts 27:1-28:16, as the longest stretch where Acts can be checked against the physical world.
4. Shared journeys and companions in Acts and Paul's undisputed letters, including differences over Jerusalem visits.
5. Every event outside the trials that Acts and Josephus both narrate: the death of Agrippa I, the famine, Theudas and Judas, and the Egyptian prophet. Felix, Festus, Agrippa II and the high priests are covered in the Roman Law sibling.

Paul's undisputed letters are taken here to be Romans, 1 and 2 Corinthians, Galatians, Philippians, 1 Thessalonians and Philemon.  These are the seven letters whose authorship is least disputed, so a match with them does not lean on a contested authorship argument.  Matches with Colossians, Ephesians, 2 Thessalonians or the Pastoral letters are noted only where they add something, and labelled.

What a match cannot do.  An author can know a town's officials from a visit, from a fellow traveller, from a written source, or from living in the region later.  So a correct title says the information is good, not how the author got it.  It does not date the book either, unless the title was used only for a short, known span.  Few were.  Questions of who wrote Acts, when, and how its speeches relate to what was said belong to the sibling articles on Gospel authorship, Gospel dating and ancient historiography.  This article supplies the Acts-specific data those questions need.  Quotations of the New Testament are this article's own translations from the SBL Greek text.  What leading defenders and critics say in their own words is collected in Scholarly Quotations.

Part 2: Roads, ports and networks

The Egnatian Way and the Macedonian stations

After landing at Neapolis, Acts has Paul go to Philippi, then "through Amphipolis and Apollonia" to Thessalonica (Acts 16:11-12;  17:1).  That is a line along the Egnatian Way, the Roman road across the southern Balkans.  The road itself is attested well before Paul.  Strabo, writing about AD 23, says that from Apollonia in Illyria "one travels the Egnatian Road, towards the east;  it has been measured by Roman miles and marked by pillars as far as Cypsela and the Hebrus River — a distance of five hundred and thirty-five miles."⁶  A bilingual milestone found in 1974 near Thessalonica names the proconsul "Gnaeus Egnatius, son of Gaius" and gives the figure 260 miles.  The Packard Humanities Institute dates it to between 146 and about 118 BC.²²

Strabo does not name the small stations Acts mentions.  The two Roman road books that do are much later.  The Antonine Itinerary, a compilation usually placed in the third or early fourth century, lists Philippi to Amphipolis 33 miles, Amphipolis to Apollonia 30, and Apollonia to Thessalonica 37 by way of a station called Mellissurgin.⁷  The Bordeaux pilgrim of AD 333 lists the same towns in the same order, with intermediate stations, at 32, 31 and 38 miles.⁷  The pilgrim adds that at Philippi was the place "where Paul and Silas were in prison."⁷  That note shows a fourth-century local tradition built on Acts, so it is not independent evidence of the event.

What follows is limited but real.  The towns Acts names lie on one road, in the right order, at intervals a traveller on foot could cover in a long day or two.  Acts gives no distances and no road name, so it cannot be caught out on either.  A writer who knew the Egnatian Way, from travel or from a source, could produce this itinerary;  so could anyone with a road book of the period.  The match shows the itinerary is sound geography.  It does not show it was travelled by these people.

The Appian Way and the welcome at Rome

Acts 28:13-15 has the travellers land at Puteoli on the Bay of Naples, stay a week, and set out for Rome.  Believers from Rome come out to meet them "as far as the Forum of Appius and Three Taverns."  Both places were stops on the Appian Way.  Cicero wrote to Atticus in April of 59 BC from "Appius' Forum, at the fourth hour," adding that he had "sent another a little while ago from Three Taverns."⁸  Horace, describing a journey of about 37 BC, calls Forum Appi "crammed with boatmen and surly innkeepers."²³  The Antonine Itinerary lists the Appian Way south from Rome as Aricia, Three Taverns, Appius' Forum and Tarracina.⁷  So the two meeting places are real road stops, and Acts names them in the order a traveller coming north from Puteoli would reach them.

Puteoli as the port of the Alexandrian grain ships

Acts has Paul reach Italy on "a ship of Alexandria" that had wintered at Malta, and land at Puteoli (Acts 28:11-13).  Two first-century writers put Alexandrian ships at Puteoli, while Josephus separately describes arriving at that port.  Seneca, writing in the early 60s, describes the whole crowd of Puteoli standing on the moles when "the Alexandrian ships" came into view, "which are usually sent ahead to announce the arrival of the fleet that follows."⁹  Philo says that when Agrippa I set out to take up his kingdom, about AD 38, the emperor advised him to take the shorter route by Alexandria rather than from Brundisium;  Agrippa went down to Dicaearchia, which is Puteoli, found Alexandrian ships ready to sail, and boarded one.²⁴  Josephus, shipwrecked on his own way to Rome in the early 60s, was picked up and landed at "Dicaearchia, which the Italians call Puteoli."¹¹  This is a setting match of the strong kind:  a specific port for a specific trade, in the right decade.

Synagogues and the Jewish diaspora

Acts has Paul begin in the synagogue in town after town.  It also has diaspora Jews from many lands in Jerusalem (Acts 2:9-11;  6:9).  The non-Christian evidence for that network is broad.  Philo's version of a letter from Agrippa I to the emperor Gaius, about AD 40, says Jerusalem had sent colonies to "Egypt, Phoenicia, Syria," to "Pamphylia, Cilicia, the greater part of Asia Minor as far as Bithynia," to Macedonia and Corinth, and to "Euboea, and Cyprus, and Crete."²⁵  Josephus quotes Roman and civic decrees of the 40s BC protecting the Jews of Ephesus, Miletus, Cos, Sardis and other cities.²⁶  A Greek inscription from Jerusalem records that Theodotus, a priest and synagogue ruler, built a synagogue "for the reading of the Law and teaching of the commandments, and the guest-house and the (other) rooms and water installations(?) for the lodging of those who are in need of it from abroad."²⁷  The editors of the Jerusalem corpus date it by its lettering to the late first century BC or early first century AD.  They also reject the popular identification with the "synagogue of the Freedmen" of Acts 6:9.²⁷

The local evidence is thinner and later.  Hemer notes that the Jewish inscription usually cited for a synagogue at Thessalonica is "late 2nd AD or later," and that the Corinth synagogue lintel "could be as late as the fourth century," in Victor Furnish's words.²  So the general network is well attested, while the particular synagogues of Acts 17-18 are not independently dated.

Paul's own letters show repeated contact with Jewish communal authority.  He writes that "from the Jews five times I received forty lashes less one" (2 Corinthians 11:24).  Forty lashes is the limit set in Deuteronomy 25:3.  These punishments fit Acts' picture of a missionary repeatedly encountering Jewish communities, although Paul does not name the locations or say that each punishment followed a synagogue visit.

What Paul's letters say about the same journeys

Paul's letters were written for other purposes, but in passing they mention several of the journeys Acts narrates.  Where they do, they mostly agree on order and place, and sometimes add detail Acts leaves out.

1. Philippi, then Thessalonica. Paul reminds the Thessalonians that he came to them after "having suffered and been shamefully treated, as you know, at Philippi" (1 Thessalonians 2:2). He thanks the Philippians that "even in Thessalonica you sent me help more than once" (Philippians 4:16). Acts 16-17 has the same order, and a beating at Philippi.¹⁶
2. Rods and a stoning. Paul says "three times I was beaten with rods, once I was stoned" (2 Corinthians 11:25). Acts narrates one beating with rods, at the Roman colony of Philippi, using the same verb, and one stoning, at Lystra (Acts 16:22; 14:19).¹⁶
3. Athens. Paul writes that "we were willing to be left behind at Athens alone" and sent Timothy back to Thessalonica (1 Thessalonians 3:1-2). Acts has Paul at Athens and then Corinth, with Silas and Timothy joining him at Corinth "from Macedonia" (Acts 17:14-16; 18:5). The two accounts agree that Paul was in Athens without his companions for a time. They differ on whether Timothy reached Athens first. Acts never says he did not, so this is a gap more than a contradiction, but Acts is plainly compressing.¹⁶
4. Damascus. Both Paul and Acts tell of an escape from Damascus "through a window in a basket" or "through the wall, lowering him in a basket." Paul blames "the ethnarch of King Aretas," Acts blames the Jews, and the two use different words for the basket (2 Corinthians 11:32-33; Acts 9:23-25).¹⁶ This is not verbatim copying. Different vocabulary does not exclude adaptation of the letter, however, so the agreement is not automatically a second independent witness. The different villains are a real difference, though both could be true at once.
5. What Acts leaves out. In the same list Paul says "three times I was shipwrecked; a night and a day I have been adrift at sea" (2 Corinthians 11:25). He wrote that before the voyage of Acts 27, and Acts reports no earlier shipwreck at all. Acts is selective on a large scale. Arguments from its silence are weak in both directions.

The people Acts and the letters share

Acts and the seven undisputed letters name many of the same people.  The counts below are from the morphologically tagged Greek New Testament, by dictionary form.¹⁶

The different name forms are worth noticing.  Acts uses Silas and Priscilla where Paul writes Silvanus and Prisca.  These differences fit independent knowledge of the same circle, but a writer adapting the letters could also use familiar alternative forms.  Titus' absence shows that Acts did not simply reproduce Paul's cast of companions.  Neither observation establishes whether its author had read the letters.  Philemon lists Aristarchus with Mark and Luke among Paul's fellow workers while Paul is a prisoner.  Acts has him seized in the Ephesus riot and later sailing with Paul for Rome (Acts 19:29;  27:2).¹⁶  Where Paul was imprisoned when he wrote Philemon is disputed;  Rome and Ephesus are both proposed.  Acts associates Aristarchus with Paul at both cities, but only the Roman journey is a prisoner journey.  On an Ephesian origin for Philemon, the match is the looser one of shared companions and location.

Part 3: Local titles and named officials

The table

The table compares provincial and local offices alongside several related claims often cited in arguments about Acts.  "Attested" means another source uses the title for that place, except where a row explicitly gives a parallel from elsewhere.  "Range" is the span of dates over which the evidence read here shows the title in use.  The rows overlap:  Gallio's name, title and date belong to one inscription, and a city title or altar is not the same kind of check as identifying a person.

The clearest matches include the provincial titles, the politarchs and the Ephesian offices;  Gallio also supplies a person and a likely year of office.  Several comparisons are weaker:  the altar is plural in Pausanias, the temple-warden example is later, and the Maltese parallel is not closely dated.  Sergius Paulus' identification and Julius' unit remain unsecured, while the plural proconsuls needs explanation.  These are useful checks of setting, with different strengths.  Counting the rows as equal and independent successes would overstate the result.

Politarchs: a title that was right, and what "right" means

The politarch case is the most famous one, and the one most often told badly.  Ernest DeWitt Burton opened his 1898 study by noting that the word in Acts 17:6, 8 "does not occur elsewhere in extant Greek literature, and has its only other vouchers in inscriptions," and counted "seventeen known inscriptions."³⁴³⁴  The popular story adds that critics once said Luke invented the word.  The sibling article Is New Testament Scholarship Unusually Skeptical? searched for such a critic and found none named.

The epigraphic record is much larger now, and its size depends on how one searches.  On 21 October 2026 the PHI database returned 51 texts for the spelling πολιταρχ- and 37 for the spelling πολειταρχ-, with three texts in both.  That is 85 records, about 74 separate stones once texts published twice are counted once.  Seventy-four records come from Macedonia, 31 from Thessalonica.  The others come from Ambrakia, Illyria, Delphi, Thrace, the north coast of the Black Sea, Bithynia, Argos and a Jewish site in Egypt.³  Earlier work on this site reported 51 texts and 94.6% Macedonian, from the first spelling alone.  The second spelling, which is the one on the well-known Vardar Gate stone, raises the count and lowers the Macedonian share to 87%.

The dates matter more than the count.  A dedication at Thessalonica from about 200-168 BC, while Macedonia still had kings, already names two men "being politarchs."³  Lists of Thessalonian politarchs run through the reign of Augustus and into the third century AD.  The Vardar Gate inscription, often dated to the first century in popular books and matched to the names Sosipater, Secundus and Gaius in Acts 20:4, is dated by the Packard database to about the middle of the second century AD.³  Its names were common ones.

So the case shows three things, and only three.  The author of Acts used the right local title for Thessalonica's magistrates.  He used a distinctive regional title attested in inscriptions.  And the word cannot date Acts, because the office existed for about 450 years.  It is good evidence of local knowledge.  It does not show the riot of Acts 17:5-9 happened.

Sergius Paulus: a name without an inscription

Acts 13:7 calls the proconsul of Cyprus "Sergius Paulus, a man of intelligence."  Apologetic writers often say an inscription confirms him.  None does.  The Soli epitaph is dated "in the 10th year, under Paulus [procon]sul."  It has "Paulus" but no "Sergius," and the Packard database dates it "after the reign of Claudius."²⁹  A cult regulation from Chytroi preserves "-ίου Καίσαρος Σεβαστοῦ" and "-οΐντου Σεργ-":  "of Tiberius or Claudius Caesar Augustus" and "of Quintus Serg-."  The words "Paulus" and "proconsul" are both editorial restoration.  The emperor has been read as Claudius (SEG 20.302, dated 46-48) and as Tiberius (SEG 55.1526, dated 37?, following Douglas Campbell).⁴  A Lucius Sergius Paullus served on the board in charge of the Tiber's banks under Claudius at Rome.²

Colin Hemer, the most thorough modern defender of Acts' accuracy, sums it up:  "The name of the proconsul cannot be confirmed, but the family of the Sergii Pauli is attested, though older arguments for their Christianity cannot be sustained, and it is doubtful if any reference to the man himself is preserved in the inscriptions mentioning them."²  He adds that "proconsul is thus correct for the period, but the fact is not chronologically informative."²  That is the right verdict.  The case confirms a real family name of senatorial rank in the right era.  It does not identify the man.

Philippi, Ephesus and Malta

The Philippi magistrates are a case of right kind, not exact term.  Acts calls them στρατηγοί, a common Greek word for a city's generals or magistrates, and has their lictors, the ῥαβδοῦχοι, beat Paul and Silas.  Philippi was a Roman colony, and its Latin inscriptions name the usual colonial offices.  William Ramsay argued that στρατηγοί translated a courtesy title, praetor.  Hemer reports that F. Haverfield answered in 1900 that it "can be a straightforward equivalent of the regular term duovir."  Hemer adds:  "There is however a difficulty, despite e.g. Haenchen's reference to 'the exact title.'"²  The term fits.  It does not show inside knowledge.

At Ephesus, the "Asiarchs" of 19:31 are attested before Paul's time in Strabo, and the "town clerk" who calms the crowd holds the right title for the city's chief executive.³²²  Two details are weaker.  The city's title "temple warden of the great Artemis" is shown here only by an inscription of the reign of Septimius Severus, about AD 200.  That shows the title later, not in the 50s.  And the clerk's "there are proconsuls" (19:38) is odd, since a province had one.  Hemer suggests it reflects the confused months after the proconsul Junius Silanus was murdered in late 54, when, in Hemer's words, "two men held office simultaneously."²  That is a conjecture that would explain the plural.  It has no direct support.

At Athens, Acts has Paul read an altar inscribed "to an unknown god" (17:23).  Pausanias, in the second century, saw at Phalerum "altars of the gods named Unknown," in the plural.³⁰  Critics point out that the explicit references are always plural.  Hemer replies that these "may be generalizing plurals, or Paul may have chosen to refer to a dedication to a particular god."²  The cult is attested.  The singular wording is not, and the reply is a possibility, not evidence.

On Malta, Publius is "the first man of the island" (28:7).  One Greek inscription from Malta honours a Roman knight as "first of the Maltese and patron," who had also served as priest of the deified Augustus.³³  Hemer himself warns that the Latin inscription usually cited alongside it probably calls a man "first" to do certain benefactions, not "first man" as a title.²  Greek honours elsewhere also praise a man as "first" to do something, as Hemer's own parallels from Naples and Thyatira show, so the word alone is not distinctive.  The Malta title is attested locally, once, in the imperial period.  It is a fair fit, not a precise one.

Part 4: Gallio and the dates of Paul's travels

What the Delphi stone says

The inscription is a letter of Claudius about the depopulation of Delphi, cut on a stone now known from nine fragments.²  The first two lines, as the standard edition prints them, give the emperor's titles.  Square brackets mark letters the editors restored;  a dot under a letter marks one read with doubt.

Τιβέρ̣[ιος Κλαύδιος Καῖσ]α̣ρ̣ Σ[εβαστ]ὸς Γ̣[ερμανικός, δημαρχικῆς ἐξου]σίας [τὸ ιβʹ, αὐτοκράτωρ τ]ὸ̣ κϛʹ⁵

"Tiberius Claudius Caesar Augustus Germanicus, [12th year of tribunician power], acclaimed emperor for the 26th time."  The number 26, κϛʹ, survives on the stone.  The number 12 is an editor's restoration.  Lines 5-6 then name the man who reported on Delphi:

ὥ[ς μοι ἄρτι ἀπήγγειλε Λ. Ἰού]νιος Γαλλίων ὁ φ̣[ίλος] μου κα̣[ὶ ἀνθύ]π̣ατος⁵

"[as] Lucius Iunius Gallio, my friend and [procon]sul, [recently reported to me]."  The name Gallio survives;  of the word "proconsul" only the last letters do.  The restoration is not seriously doubted.  The restoration identifies the emperor's friend reporting on a city of Achaia as its governor, and Gallio's brother Seneca separately recalls that Gallio "began to develop a fever in Achaia" and "took ship at once."³⁵

How the 26th acclamation dates the letter

An emperor was "acclaimed" imperator after victories, so the count rose irregularly.  Jerome Murphy-O'Connor sets out the argument.¹

1. The dedication of the Aqua Claudia, the aqueduct at Rome, gives Claudius' "12th year of tribunician power" and "acclaimed emperor for the 27th time." Frontinus dates that dedication to 1 August in the consulship of Sulla and Titianus, which was AD 52.
2. Claudius' 12th tribunician year ran from 25 January 52 to 24 January 53. So the 27th acclamation fell between 25 January and 1 August 52.
3. Other inscriptions put the 22nd, 23rd and 24th acclamations in his 11th tribunician year, 25 January 51 to 24 January 52. No surviving text links the 25th or 26th to a year.

So the letter, written after the 26th and before the 27th, falls before 1 August 52.  Its earliest possible date depends on where the 25th and 26th fall.  Murphy-O'Connor admits this step rests on an assumption about how often acclamations came:  "The argument is tenuous but, given the present dearth of evidence, it is the only one possible."¹  He puts the letter in the late spring or early summer of 52.  Gerd Lüdemann, a critic of the conventional Pauline chronology, accepts the same window, "between 25 January and 1 August of the year 52 C.E."³⁶

A proconsul normally took office about 1 July and served a year.  A letter of spring 52 that speaks of Gallio's report therefore points to a term of July 51 to June 52.  Murphy-O'Connor adds two cautions.  Gallio "would naturally have been given the title" even if he had just left office, and he might in theory have served two years.  He concludes that Gallio's term "is more likely to have been A.D. 51-52 than the previous year."¹  Colin Hemer, Lüdemann and Murphy-O'Connor all reach 51-52 as the likeliest year, by different routes.²

What the date can and cannot fix

The inscription dates Gallio.  It does not mention Paul.  The date reaches Paul only through a chain of conditions, and each link should be stated.

1. If the hearing before Gallio in Acts 18:12-17 happened, Paul was in Corinth at some point between about July 51 and June 52 (or a year earlier).
2. If Acts' "a year and six months" in Corinth (18:11) is right and covers the time before the hearing, Paul arrived in late 49 or 50. Hemer's reconstruction is arrival in autumn 50 and departure in spring 52.²
3. If the intervals Paul gives in Galatians are counted back from there, the conversion and the first visits to Jerusalem fall in the early 30s. Those intervals are Paul's own, but how they connect to the Corinth stay depends on how Acts' journeys are arranged (Part 7).

Each step adds uncertainty.  The Gallio date is independent evidence;  the dates built on it are reconstructions.  One date cannot fix every year of Paul's life.  It also cannot confirm Acts by itself, since it is Acts that places Paul before Gallio.  What the inscription can show is that Acts' synchronism is possible:  Acts names the right proconsul for a stay in Corinth that the rest of its chronology puts around 50-52.  The critic Lüdemann, who thinks Acts 18 fuses traditions from two or more of Paul's visits, still allows that "a visit by Paul to Corinth circa 51/52, which is implied by the reference to Gallio, fits in well."³⁶

The other anchors, and how firm they are

The expulsion under Claudius

The expulsion deserves a closer look because the year AD 49 is often printed as if a contemporary source gave it.  None does.

1. Suetonius, writing about AD 120: "Since the Jews constantly made disturbances at the instigation of Chrestus, he expelled them from Rome."³¹ No year is given. Whether "Chrestus" means Christ is debated.
2. Cassius Dio, writing about AD 220, under the year 41: Claudius "did not drive them out, but ordered them, while continuing their traditional mode of life, not to hold meetings."²¹
3. Orosius, about AD 417: "In the ninth year of the same [emperor], Josephus reports, the Jews were expelled from the City by Claudius; but Suetonius moves me more."²⁰ The editor of Orosius notes beside this passage that Orosius is mistaken about Josephus. No such report is in Josephus' surviving works, as Haenchen, Hemer and Lüdemann all note.³⁷³⁶² The only expulsion of Jews from Rome that Josephus does report was under Tiberius.¹⁷

Two readings are open.  Lüdemann argues that Dio and Suetonius describe one measure in 41, and that Acts 18 has merged that with a later visit.³⁶  Hemer replies that Dio "says expressly that Claudius did not expel the Jews" on the occasion he describes, so it is "arbitrary to suppose that Dio is correcting Suetonius."²  Both are reasonable.  For this article the point is narrower.  Acts 18:2 fits a date in the late 40s.  But if the year 49 is accepted because it fits Acts, it cannot then be counted as an independent confirmation of Acts.  Hemer, to his credit, says as much:  "If it appears that we are choosing the explicit testimony because it favours Acts, we can only reply that the concurrence of ostensible evidence ... warrants taking the evidence seriously."²

Part 5: The voyage and shipwreck of Acts 27-28

The route as Acts tells it

Acts 27 is the most detailed sea voyage in early Christian literature.  Paul and other prisoners sail from Caesarea in a ship of Adramyttium, call at Sidon, pass under the lee of Cyprus, and reach Myra in Lycia.  There the centurion transfers them to "a ship of Alexandria sailing for Italy."  Slowed by contrary winds, it gets under the lee of Crete and reaches a place called Fair Havens, near the town of Lasea.  "The Fast" is already over, so sailing is now dangerous (27:9).  The majority decide to try for Phoenix, a better harbour further west, to winter there.  A northeast wind called Euraquilo catches the ship, drives it past the small island of Cauda, and the crew undergird the hull, fear the Syrtis shoals off Africa, and lower the gear.  After fourteen days "in the Adria" the sailors sense land at night, take soundings of twenty and then fifteen fathoms, drop four anchors from the stern, and at dawn run the ship aground where "two seas" meet.  All 276 aboard reach shore on Malta.  Three months later they sail on in another Alexandrian ship that had wintered there, with the Twin Brothers as its figurehead, to Syracuse, Rhegium and Puteoli.

What can be checked

The season.  "The Fast" is the Day of Atonement, which falls in September or early October.  Roman writers treated autumn as the dangerous end of the sailing year.  Pliny the Elder, who died in AD 79, dates the start of winter to about forty-four days after the autumn equinox, which "usually happens on the third of the Ides of November," that is, 11 November.  He adds:  "Yet the severity of the storms does not entirely close up the sea.  In former times, pirates were compelled, by the fear of death, to rush into death, and to brave the winter ocean;  now we are driven to it by avarice."¹⁰  Vegetius, writing three centuries later, gives a fuller rule:  sailing was "uncertain" from mid-September to 11 November and "the seas are closed" from 11 November to 10 March.³⁸  Suetonius records that Claudius, in a grain shortage, offered merchants a guarantee against storm losses so that grain would be brought "even in the winter season."³¹  So a grain ship still at sea after the Fast is exactly the risky but common case Acts describes.

The ships and the grain route.  Alexandrian grain ships were large.  Lucian, in the second century, describes one blown into the Piraeus and reports its shipwright's figures:  "a hundred and twenty cubits" long, more than a quarter of that in beam, and twenty-nine cubits deep.³⁹  Its captain had left Pharos for Italy, sighted Cyprus on the seventh day, been driven back to Sidon, passed the Chelidonian islands off Lycia in a storm, and reached Athens on "the seventieth day from Egypt," working "against the Etesian winds."³⁹  That shows why an Alexandrian ship bound for Italy might be found at Myra in Lycia:  the summer winds forced ships from Egypt north along the Levant and Asia Minor before they turned west.  Josephus was shipwrecked on his own way to Rome in the early 60s.  His ship carried "about six hundred" people, of whom about eighty were picked up by a ship from Cyrene.¹¹  Acts' 276 is well within that range.  The number itself varies in the manuscripts:  the main critical texts read "two hundred seventy-six," while Westcott and Hort printed "about seventy-six."⁴⁰

The places.  Myra, Cnidus, Salmone, Cauda, Syracuse, Rhegium and Puteoli are all well-known places, on plausible sailing lines.  Smith reported in 1848 that he knew no other ancient author naming Fair Havens or Lasea;  a bay on the south coast of Crete still carries the name, and ruins nearby were identified as Lasea in 1856.¹²⁴¹  Phoenix is more doubtful.  Smith identified it with Lutro.  Kirsopp Lake and Henry Cadbury objected that Acts describes a harbour "looking" southwest and northwest, while "Lutro looks almost due east."⁴¹  That dispute is about where Phoenix was, not about whether the voyage happened, since the ship never reached it.

The island.  The traditional landing place is St Paul's Bay on the northeast of Malta.  An old alternative, revived in the 1970s by A. Acworth and O. Meinardus, puts the wreck on Melite in the Adriatic, modern Mljet off Croatia, partly because Acts says the ship drifted "in the Adria."²  In the first century, though, "Adria" was used for the open sea between Greece, Sicily and Africa.  Josephus says his own ship sank "in the middle of the Adria" on the way to Italy.¹¹  Hemer cites Ptolemy, for whom Crete "is bordered on the west by the Adriatic Sea."²  The onward route also fits Malta and not Mljet.  An Alexandrian grain ship would winter on its way to Italy, at an island south of Sicily, and the next ports, Syracuse and Rhegium, are the natural ones from Malta.  Which bay on Malta is less certain.  Smith argued for St Paul's Bay;  W. Burridge, as Hemer reports, favoured the neighbouring Mellieha Bay.²  The island is well supported.  The exact beach is not.

James Smith's calculation, and what it proves

James Smith of Jordanhill, a Fellow of the Royal Society who called himself "a yacht sailor of more than thirty years' standing,"¹² published The Voyage and Shipwreck of St. Paul in 1848.  It remains the most influential defence of Acts 27, and its core is a calculation.  Smith reasoned that a ship lying to on the starboard tack, in an east-northeast gale, would drift on a course of "W. 8° N., which is the bearing of Malta to the nearest degree."¹²  For the rate of drift he asked two naval officers commanding ships at Valletta.  Captain M'Lean said "forty miles in twenty-four hours might be reckoned a fair allowance."  Captain Graves said "From three-quarters of a mile an hour to two miles an hour."¹²  Smith took the mean of both answers, 36.5 miles a day, and the distance from Cauda to the point of Koura at the mouth of St Paul's Bay, 476.6 miles, and found that the drift "would take exactly thirteen days, one hour, and twenty-one minutes."¹²  Acts says the sailors sensed land on the fourteenth night after leaving Fair Havens.

Smith was candid that the fit looked too good.  He set out his inputs, he said, "lest I should be accused of 'cooking' them, that is, of selecting those only which answered my purpose."¹²  Rerunning his arithmetic shows two things.¹³

1. The geographical calculation holds. From Smith's own coordinates, the rhumb-line distance from Cauda to Koura is 474.6 nautical miles on a course of W 7.7° N, against his 476.6 miles and W 8° N. This reproduces the destination's bearing. Smith separately estimated the ship's heading and leeway to predict a similar drift direction; his figures were assumptions about an ancient ship, not measurements of this one.¹²
2. The timing is not precise. The 36.5 miles a day is an average of guesses, and Smith himself suggested 1.5 miles an hour to Captain Graves, "to which he assented."¹² On Graves's own range, the drift takes between 9.9 days (2 miles an hour) and 26.5 days (three-quarters of a mile an hour). On M'Lean's figure alone it is 11.9 days. Fourteen days lies comfortably inside the range of honest estimates. It does not pick out Malta from a wide band of possible arrival times.

Colin Hemer, who defends the narrative's accuracy at every turn, states the same limit plainly:  Smith's result "is of course coincidental, for he has to use arbitrary averages and approximations as the basis for rigid calculation.  No doubt it is fortuitous that the errors have so closely cancelled out."  Hemer still calls it "a striking confirmation of the narrative" in principle.²  The fair version is weaker but still real:  the direction of drift, the length of the voyage, and the island all fit together.  Each fit is loose, and they are not independent of one another, because the island is what fixes the distance.  They should not be multiplied as though they were separate improbable coincidences.  Hemer also notes that Smith misread "Euraquilo" on the modern 32-point compass rather than the ancient 12-wind scheme, an error he thinks is small in practice.²

Smith's soundings argument has the same character.  He matched the twenty and fifteen fathoms of Acts 27:28 to an Admiralty chart of St Paul's Bay, conceding in a note that "the depth of twenty fathoms is not marked" and "must be between seventeen and twenty-one."¹²  A nineteenth-century chart is a measurement of the bay as it was then.  It is evidence that such soundings are possible on that approach, not a record of the night of the wreck.

What critics say about the voyage

The strongest critical readings do not deny that Acts 27 rests on a real voyage.  Ernst Haenchen's commentary, a leading critical commentary of the 1960s, says the author "certainly possessed a journal of this voyage."  His objection is to the scenes about Paul.  "Just those edifying supplements which extol Paul are additions by the author to a journal of reminiscences which could not report anything special about Paul, but only described the voyage, the danger and the rescue."³⁷  He finds Paul's speech in the storm unreal:  Paul "delivers a speech on a pounding ship in a howling storm as if he stood on the Areopagus."  He argues that the sailors would never have tried to escape in the boat, as Acts 27:30 says:  that "would have been outright stupidity.  Only landlubbers could conceive such a suspicion."³⁷  He also rejects the older theory of Martin Dibelius that Luke wrote a typical literary sea voyage:  "there was not a standard account of sea voyages by which one could prove himself an historian."³⁷

Haenchen's position is a serious one, and it shows the limit of what the nautical evidence can do.  The checks above support the voyage, the season, the ships and the island.  They cannot test whether Paul gave advice at Fair Havens, spoke during the storm, saw an angel, foiled the sailors, or shook off a viper.  Those scenes have Acts as their only witness.  Haenchen's claim about the sailors is itself a claim about seamanship that can be argued either way.  The sailors may have reasoned that a small boat could reach shore before the anchored ship broke up.  That point is open.

Part 6: The "we" passages

Four stretches of Acts switch from "they" to "we":  16:10-17, 20:5-15, 21:1-18 and 27:1-28:16.  Who "we" are, and why the narrator appears and disappears, is argued in the sibling article Gospel Authorship.  This part gives only the Acts-specific data that bear on travel.

Where "we" starts and stops.  A word count of the first-person plural forms in the Greek text shows a clear pattern.¹⁶

1. Each stretch begins at or just before a sea crossing: from Troas to Neapolis (16:10-11), from Philippi to Troas (20:5-6), from Miletus toward Tyre (21:1), and from Caesarea toward Rome (27:1-2).
2. None of them stays at sea. "We" go out to the riverside at Philippi and are followed by the slave girl (16:13-17); "we" are gathered in the upper room at Troas when Eutychus falls (20:7-8); "we" stay with Philip at Caesarea, hear Agabus, walk up to Jerusalem and go in to James (21:8-18); and "we" travel the Appian Way into Rome (28:14-16).
3. The narration drops back to the third person at some of the most dramatic moments at sea. There is no "we" in the grounding and the swim ashore (27:38-44), or in the viper on Malta (28:3-6). The pronoun is used just before, in the headcount of 27:37, "we were in all 276 souls," and returns in the welcome on Malta (28:2).

The sea-voyage theory.  In 1978 Vernon Robbins argued that the "we" was a convention of ancient sea-voyage writing:  "The we-passages fit the genre of sea voyage narratives.  Such accounts would be expected to contain first person narration, whether or not the author was an actual participant in the voyage."⁴²  He supported it with three ancient texts that shift from third person to "we" when a voyage begins.  Colin Hemer re-read all three and concluded:  "The paradigm does not work, and it cannot be used to draw larger conclusions about the narrative of Acts 27-28."¹⁴  Susan Praeder built the comparison Robbins had not, listing first-person and third-person sea voyages in ancient literature, and found Acts without a true parallel either way:  "If Acts is a first person ancient history, then it is alone in its lack of first person singular participation."¹⁵  The data above also limit a simple rule that sea voyages require first-person narration.  Robbins recognised that the first-person sections extend ashore;  his thesis was a literary association with voyages, not a claim that every sentence in them occurs aboard ship.  Acts narrates other voyages in the third person (13:4, 13:13, 18:18-21), and its "we" runs on well after landing.

What the pattern does and does not show.  The pattern is what one would expect if a companion joined and left Paul's party at certain points, and wrote or kept notes on what he saw.  It is also what one would expect if a later writer used such a companion's notes.  Hemer himself grants that the third option, a deliberate false claim of presence, "seems a stronger alternative than any of the preceding.  It involves no special explanation."²  His answer is that a forger would make the claim more often and more clearly:  "why did he do this sporadically?" and "Why did he make his claim so inconspicuously?"²  That is a fair argument from probability, not a proof.  The travel evidence in this article checks what the "we" sections say happened.  It cannot check who was there.

Part 7: Paul's visits to Jerusalem, in Galatians and in Acts

What each text says

Galatians 1-2 is Paul's own sworn account of his contacts with Jerusalem:  "In what I am writing to you, before God, I do not lie" (Galatians 1:20).  Acts 9-15 tells the same years from outside.  Set side by side, they agree on much and disagree on the number and nature of the visits.  The translations in the table are this article's own, from the SBL Greek text.¹⁶

Two identifications and what each costs

Most scholars identify the visit of Galatians 2 with the council of Acts 15.  Haenchen gives the reason:  Acts 15 "shows such striking similarities to Gal. 2.1-10" that the two accounts, both about Paul and Barnabas going from Antioch to Jerusalem over circumcision, seem "to refer to one and the same episode."³⁷  The costs of that view are real.

1. Acts then has a visit, the famine relief of 11:30, that Paul's sworn list seems to leave out. Haenchen notes that doubt "has been thrown on his report—not without reason—by the fact that Paul does not mention this relief-mission in Gal. 1.18-2.10."³⁷
2. Paul describes a private meeting at which the leaders "added nothing" to him; Acts describes a public council that issued rules for Gentiles. Paul never mentions those rules in any letter, even when he discusses food offered to idols at length in 1 Corinthians 8-10.
3. Peter's retreat at Antioch is hard to explain if a council had just settled the question in public with Peter's support.

The main alternative identifies Galatians 2 with the famine visit of Acts 11:30.  Hemer argues it fully.  The "revelation" of Galatians 2:2 would be Agabus' prophecy, and the request "that we remember the poor" fits a relief mission.²  In Hemer's reconstruction Galatians was written before the council of Acts 15, explaining why Paul does not mention it.  The Antioch incident would come before the council and explain why one was needed.  The costs are also real.

1. Hemer's reconstruction makes Galatians Paul's earliest letter, written to churches in southern Galatia founded on the journey of Acts 13-14. Hemer concedes: "Its persuasiveness is tied to the acceptance of the 'South Galatian' view of the destination of the epistle."² It also separates Galatians by several years from Romans, the letter it most resembles. Hemer grants that "both of these implications may be thought difficulties."²
2. Acts tells the famine visit in two sentences, with no conference, no Titus and no circumcision dispute. On this view Acts knew or reported almost nothing of what Paul thought was the important part of the trip.
3. Acts places the famine visit before the death of Agrippa I in 44. Josephus puts the great famine under Tiberius Alexander, about 46-48.¹⁷ Hemer answers that "it is unnecessary to press rigid chronological sequence in Acts 11-12."² That may be right, but it is a concession that Acts' order here is not strictly chronological.

Haenchen's best-known objection to an early conference is about time.  If the Jerusalem meeting came in the winter of 43/44, "Paul would then have been converted 'fourteen years' before—i.e. almost immediately after the death of Jesus in the year 30."  He judges that "insurmountable."³⁷  The force of that objection depends on choices it does not state.  Paul's "after three years" and "after fourteen years" were probably counted inclusively, so each may be a year shorter than it looks.  Whether the fourteen years run from the conversion or from the first visit is not stated in the Greek.  And if the famine visit fell about 46, not 43/44, the gap from a crucifixion in 30 grows by two or three years.  On those choices both identifications fit a conversion in the early 30s.  The arithmetic does not decide between them.

What follows

Hemer, the leading defender of the famine-visit view, sums it up:  "This is of course far short of a compelling argument for the historicity of Acts."  It meets "exaggerated claims to the contrary."²  That is the honest result.  There is a real tension between Galatians and Acts, and it is not removed by any solution that costs nothing.  It is also not a proven contradiction.  Acts never claims to list every visit, and Paul's purpose in Galatians is to show that his gospel did not come from the Jerusalem leaders, not to give a travel log.  What the comparison shows clearly is that Acts and Paul present different accounts.  That does not by itself establish whether the author of Acts knew Galatians.  Acts lacks Arabia, the fifteen days, the private meeting, Titus and the clash at Antioch.  Paul lacks the famine relief, the decree and the split over Mark.

The two first-visit accounts differ in emphasis too.  Paul stresses how few apostles he saw.  Acts says Barnabas brought him "to the apostles" and that he preached openly in Jerusalem.  Hemer points out that both accounts imply a cautious, limited welcome:  in Paul he "remained unknown by face to the churches of Judea," in Acts "the church feared him and disbelieved his conversion."²  That reconciliation is plausible.  It is not evidence on its own.

Part 8: Where Acts and Josephus tell the same story

Josephus wrote his Jewish War in the 70s and his Antiquities about 93-94.  He and Acts overlap in three places that matter here.  One supplies a substantial event parallel with disputed independence.  One is a genuine chronological problem.  One combines different estimates of a following with numbers of casualties, which cannot be compared as if they counted the same thing.

The death of Agrippa I: an event reported twice

Acts 12:20-23 says that King Herod, Agrippa I, came down to Caesarea, put on royal robes on a set day, sat on his throne and addressed the people.  They shouted, "The voice of a god and not of a man!"  At once an angel of the Lord struck him "because he did not give God the glory," and "he was eaten by worms and died."

Josephus tells the same story at greater length (the translations here are this article's own, from Niese's Greek).  Agrippa had completed his third year as king of all Judea when he came to Caesarea for spectacles in honour of Caesar.  On the second day he entered the theatre at dawn wearing "a robe made entirely of silver," which flashed in the sun.  His flatterers called out from all sides, "addressing him as a god," saying, "if until now we have feared you as a man, from now on we confess you are more than mortal."  "The king did not rebuke them, nor reject their impious flattery."  Soon after, he saw an owl perched on a rope above his head, took it as a messenger of evil, and was seized by a violent pain in his belly.  He died after five days of it.¹⁷

The agreements are specific:  Caesarea, a royal robe, public praise as a god, failure to reject that praise, an affliction and death.  Josephus alone explicitly describes a festival, silver cloth and abdominal pain.  Acts has an angel, Josephus an owl.  Acts has worms, Josephus five days of illness.  Acts' "at once" describes the striking;  it does not specify how many days passed before death, so the five days are not a demonstrated contradiction.  Acts gives a speech and a quarrel with Tyre and Sidon that Josephus does not mention.  Both authors give the death religious meaning;  Josephus' Agrippa recognises the fate God has willed, not merely a medical accident.¹⁷

Those differences establish that the accounts are not identical.  They do not establish literary independence.  Mason asks why Acts mentions the royal robes without Josephus' explanation that their brilliance prompted the acclamation.  He suggests adaptation of Josephus, and includes Agrippa's death in his cumulative case for dependence.¹⁸  Royal clothing at a royal appearance could also be reported independently, and the shared event does not require borrowing.  Neither explanation is settled by this comparison alone.

This is one of the clearest external parallels to an event in Acts.  Josephus dates the event to about AD 44 by placing it three years into Agrippa's reign under Claudius.  If Acts used an independent tradition, the agreement is strong corroboration.  If Acts adapted Josephus, it is an accurate retelling of an event from that source rather than a second independent attestation.  Either way, Josephus supports the historical core;  the number of independent witnesses remains in question.

Theudas and Judas: an unresolved problem

In Acts 5:34-39 the Pharisee Gamaliel advises the council to leave the apostles alone.  He gives two examples of movements that failed:  "Before these days Theudas rose up, claiming to be somebody, and a number of men, about four hundred, joined him.  He was killed, and all who followed him were scattered and came to nothing.  After him Judas the Galilean rose up in the days of the census."¹⁶

Josephus also reports both men.  Judas the Galilean led the revolt against Quirinius' census, which was taken when Judea became a province in AD 6.  Theudas, "a certain impostor," persuaded "the majority of the crowd" to take their possessions and follow him to the Jordan, claiming that at his command the river would part.  The governor Fadus sent cavalry, who killed many and took many alive, and they cut off Theudas' head.¹⁷  Fadus governed about 44-46.  Josephus then tells how Fadus' successor, Tiberius Alexander, crucified "the sons of Judas the Galilean, who had stirred the people to revolt from the Romans when Quirinius was assessing Judea."¹⁷

Two chronological problems follow if Acts means Josephus' Theudas.

1. Order. Acts puts Theudas before Judas. Josephus puts Judas about forty years before Theudas.
2. Date. Gamaliel's speech is set in the first years of the church, the early 30s. Josephus' Theudas died about a decade later. Gamaliel could not cite him. Josephus supplies no numerical check on Acts' "about four hundred." His expressions "the majority of the crowd" and "many" are compatible with that figure.

Steve Mason, a specialist on Josephus, argues that Luke knew Josephus and misremembered him.  His strongest point is about order.  Right after Theudas, Josephus mentions the crucifixion of Judas' sons and reminds the reader who Judas was.  "Since Josephus links Theudas and Judas in this order for his own narrative purposes, the reproduction of this connection in Acts is either another noteworthy coincidence or the result of Luke's knowledge of Josephus."¹⁸  Mason also notes that Josephus says the land was full of such leaders, so Luke's choice of the same two names needs explaining.

The usual defence is that Acts refers to a different and earlier Theudas, perhaps one of the many rebels after Herod's death in 4 BC.  Mason answers that "we do not know of such a person from any other source, and the coincidence ... would be uncanny."¹⁸  That reply has force.  It also rests partly on silence.  Josephus says that after Herod's death "Judea was full of brigand bands," and that whoever gathered a following set himself up as king, yet he names only a few of them.¹⁷

The honest verdict is that the Theudas passage is a real difficulty for the accuracy of Acts.  The "second Theudas" is a possible hypothesis with no direct evidence.  Mason's dependence theory explains the order by proposing that Acts handled Josephus loosely.  It normally implies a date after the Antiquities, about 93-94, although Mason allows possible contact with an earlier recitation.¹⁸  Either way the passage is a speech in Acts, and speeches in ancient histories were often the historian's composition.  Even on the critical view, an error in a speech about events a decade later would show the author's knowledge of Judean history was imperfect.  It would not show that the travel narrative of chapters 13-28 is invented.  The sibling article Gospel Dating weighs Mason's theory as an argument about when Acts was written.

The Egyptian prophet: different numbers for different things

When the commander arrests Paul in the Temple, he asks:  "Are you not the Egyptian who some time ago stirred up a revolt and led the four thousand men of the Assassins out into the wilderness?" (Acts 21:38).¹⁶  Josephus tells of the same man twice.  In the Jewish War he says the Egyptian, a false prophet, "gathered about thirty thousand of those he had deceived," led them "from the wilderness" to the Mount of Olives, and planned to force his way into Jerusalem.  Felix attacked;  the Egyptian fled "with a few," and "most of those with him were killed or taken alive."¹⁹  In the Antiquities he gives no total of followers, but says Felix "killed four hundred of them, and took two hundred alive."¹⁷

These are three different numbers for three different things:  followers in the War, casualties and prisoners in the Antiquities, and followers again in Acts.  Adding Josephus' 400 and 200 does not give a total following.  The real comparison is Acts' 4,000 against the War's 30,000.  Hemer prefers the smaller figure, "especially as Josephus can be shown elsewhere to inflate numbers."²  Mason reads Josephus' other account as a smaller engagement.¹⁸  That inference is uncertain:  400 killed and 200 captured do not establish how many followers there were in all.  Acts' smaller number does not show that Acts is right.  The two totals disagree if they describe the same group at the same stage.  No surviving count establishes which is right.

Mason raises a sharper point.  Josephus keeps the Egyptian's followers separate from the sicarii, the urban knife-men he describes just before him.  Acts calls them sicarii.  Mason argues that Josephus "seems to have been the first" to use that Latin word for Jewish rebels in Greek, and that Acts therefore got it from him.¹⁸  That is possible.  It is also an argument from what survives, and in Acts the speaker is a Roman commander, for whom the Latin word would be natural.  The association of the Egyptian with the knife-men may be the commander's, or the author's, error.  It is not evidence of a different event.

Part 9: The scorecard, and what testability achieves

The table gathers the cases above by the kind of check each one is.  "Result" says what the external evidence does, not what it is often said to do.

What testability achieves.  Three things, each limited.

1. It shows the author had good information about the Roman East of the 50s. A writer who gets these city titles, provincial arrangements, ports, roads and sailing conditions right was either there, used someone who was, or had unusually good sources. The checks cannot say which. Nor do they show when he wrote, since most of these facts stayed true for decades.
2. It supplies the strongest anchor for the missionary journeys. The Gallio inscription supplies a named governor and a narrow date window for Paul's Corinthian stay, conditional on Acts' report of the hearing. Without it Pauline chronology would float. With it, the conversion, the visits to Jerusalem and the letters can be placed within a few years, on the assumption that Acts and the letters can be fitted together.
3. It supports a few events and leaves most untested. Josephus supports the substance of Agrippa's death story, with literary independence still disputed. Paul independently recalls mistreatment at Philippi, beatings with rods, a stoning and his escape from Damascus. His letters do not locate the stoning at Lystra or identify which beating with rods happened at Philippi. The council of Acts 15, the riot at Ephesus, the arrest in the Temple, the trials, the speeches, the healings and the visions have Acts as their only witness, or Acts and a letter that tells them differently.

What it does not achieve.  Accurate setting does not verify a speech.  It does not verify a miracle;  a correct port is equally correct whether or not a viper bit Paul there.  It does not prove that the author was Paul's companion, since a later writer with a companion's notes, or a good knowledge of the region, would get the same score.  And an apparent mistake, such as Theudas, does not make the rest fiction.  Historians who are wrong about one event in a speech are not therefore wrong about the roads they travelled.  The proportionate conclusion is the one a classical historian would draw for any ancient narrative with this record:  a well-informed source, worth using, to be checked wherever it can be checked and held more loosely where it cannot.

Objections and responses

"Accuracy in small details proves Acts is accurate in everything."  It does not.  Ancient novels also set their stories in real cities with real officials, and the relevance of that comparison to Acts is assessed in Ancient Historiography.  The value of the details is narrower:  they show the author had good information and took care with it, which raises the prior plausibility of his other claims somewhat.  They cannot lift a miracle story above "reported by a well-informed source."  William Ramsay's famous verdict that Luke was a historian "of the first rank" is discussed, with its own qualifications, in the sibling article Ancient Historiography.

"Acts is theology, so its historical details do not count."  A theological purpose does not make a correct title incorrect.  Haenchen, a critic who thought the author used "constructive imagination" freely, still held that the voyage rests on "a journal of this voyage."³⁷  The details have to be weighed one at a time, whatever the author's purpose.

"The politarchs prove Luke was a careful eyewitness."  They prove he used the right local title.  The title was used in Thessalonica for about 450 years and is chiefly known from inscriptions, so it is good evidence of local information.  It does not establish an eyewitness, or a date, and the story that critics once denied the title has not been traced to any named critic.

"Sergius Paulus has been found in inscriptions."  Not securely.  The Soli stone names only a Paulus and may be second century.  The Chytroi stone preserves "Quintus Serg-" and the rest is restored.  Hemer, who would welcome the confirmation, says the man "cannot be confirmed."²

"Smith proved the ship drifted to Malta in exactly fourteen days."  Smith's direction is good and his distance is right.  His drift rate was an average of two captains' guesses, and on their range of answers the drift takes 10 to 26 days.  Hemer calls the close fit "coincidental."²

"The 'we' passages prove the author was Paul's companion."  They show the narrator claims to have been present at certain points, sporadically and without fanfare.  That fits a real companion better than it fits the sea-voyage convention Robbins proposed, which has weak comparative support.  It does not exclude a writer using a companion's notes or making a false claim.

"Galatians proves Acts invented Paul's visits to Jerusalem."  It shows a real tension, not an invention.  Both main identifications of the visits are held by serious scholars, and each has a cost.  Acts and Galatians share Barnabas, Peter, James, Antioch, circumcision and a famine-relief concern, which an author inventing freely would not need to match.

"Theudas shows Acts copied Josephus and got him wrong, so Acts is second-century."  The order of Theudas and Judas is a real problem.  But the dependence theory needs more than the order:  it needs Luke to have read the Antiquities and handled it loosely.  Acts' details absent from Josephus and its different numbers for the Egyptian rule out simple transcription.  They do not rule out selective use or adaptation, which is the dependence hypothesis that needs testing.  The dating question is argued in Gospel Dating.

"The 4,000 of Acts 21:38 contradicts Josephus' 30,000."  They are different totals for the following.  Josephus' other figures, 400 killed and 200 captured, count casualties and prisoners;  they neither give the total following nor by themselves contradict 30,000.  Acts may count a particular contingent, but neither text establishes that explanation.  No independent count settles the discrepancy.

"Claudius' expulsion is dated to 49 by Josephus, so Acts 18 is confirmed."  No surviving text of Josephus says so.  The year 49 comes from Orosius about 417, and Dio puts a related measure in 41.  A date chosen because it fits Acts cannot then confirm Acts.

"The Bordeaux pilgrim saw Paul's prison at Philippi."  He saw what fourth-century Christians showed him.  The note shows a tradition built on Acts, not independent evidence for Acts 16.

Issues and unanswered questions

1. Which bay? St Paul's Bay and Mellieha Bay both have defenders. Claims that Roman anchors recovered off Malta came from Paul's ship were not examined for this article.
2. The 26th acclamation. The window for the Delphi letter rests on an inference about how often acclamations came. A new inscription dating Claudius' 25th or 26th acclamation would tighten or move it.
3. Sergius Paulus. A secure inscription would turn the Cyprus episode from a setting match into an identified person. None is known.
4. Theudas. No independent attestation of the proposed earlier rebel has been identified. A papyrus or inscription naming a rebel of that name before AD 6 would change the case; so would firmer evidence that Acts used the Antiquities.
5. The temple-warden title. Whether Ephesus called itself "temple warden of Artemis" in the 50s was not settled from the sources read here. The earliest dated example cited is Severan.
6. Philemon's prison. The Aristarchus interlock fits either Rome or Ephesus. Where Paul wrote Philemon remains disputed.
7. The Via Sebaste. Milestones of the road built in 6 BC between Pisidian Antioch and the coast are reported but were not read for this article, so the land route of Acts 13-14 is less well documented here than the Egnatian Way.
8. Sources not read. The texts of the Aqua Claudia inscription and of CIL VI 31545 were known only through Murphy-O'Connor and Hemer. Pervo's Dating Acts and Campbell's 2005 study of the Chytroi stone were not obtained.

Verdict

Inscriptions, road books, Roman historians and sailing conditions support many details examined here, and Gallio supplies a particularly useful date.  Its titles are right for their places, its routes are real, its sailing season is right, and its account of Agrippa's death agrees in substance with Josephus.  That earns Acts a place as a well-informed historical source for the eastern provinces of the 50s, and it is why the major chronologies of Paul, conservative and critical, are built around Gallio, including Lüdemann's, which rearranges Acts 18.

The same checks set limits.  Most titles cannot date the book.  The best-known shipwreck arithmetic is loose.  The proconsul of Cyprus has no secure inscription.  Theudas is a real error or a real puzzle.  Galatians tells Paul's visits to Jerusalem differently in ways no cheap harmony removes.  Above all, the checks touch the setting and a handful of events.  They leave untested the speeches, the miracles, and the author's own presence, which is where most readers' real questions lie.

Sources