Claudius had commanded all the Jews to leave Rome. - Acts 18:2
In The Lives of the Twelve Caesars, Suetonius records, "He banished from Rome all the Jews, who were continually making disturbances at the instigation of one Chrestus." Chrestus is either an entirely unknown man or an easy mistake for Christus.
(The Lives of the Twelve Caesars, Complete, TIBERIUS CLAUDIUS DRUSUS CAESAR.XXV by Suetonius, translator Alexander Thomson, M.D., and editor Thomas Forester @ https://www.gutenberg.org/cache/epub/6400/pg6400-images.html#link2H_4_0006; Hillsdale College - Ancient Christianity)
The Delphi Inscription was a letter from the emperor Claudius to the city of Delphi.
(The ESV Study BibleTM, English Standard Version (ESV) by Crossway Bibles, 2007. Page 2301)