The Gallio inscription
GradeEstablished
Acts tells how the Jews of Corinth brought Paul before the Roman governor "when Gallio was the deputy of Achaia" (), that is, its proconsul. Nine fragments of a letter of the emperor Claudius to the city of Delphi name "[L. Jun]ius Gallio, my fri[end] an[d procon]sul". The letter is dated by Claudius' 26th acclamation as emperor to 52 CE. Proconsuls normally served for one year, so Gallio's term falls in 51-52 (or 52-53). Christians point out that the author of Acts gives the right title to the right man at the right time, and that this incidental detail provides the one fixed date in Paul's career.
Established. The inscription is authentic and its link to Acts is secure. It fixes Paul's stay in Corinth to about 51-52 CE. From that date Paul's chronology, and the early date of his letters, is reckoned.
Explore the counterarguments
The inscription confirms Gallio and the date of his office; it does not by itself confirm that Paul's hearing before him happened as Acts tells it. A writer with good knowledge of the period could get such details right without being present.