16:23 Paul may have been residing with Gaius at the time of writing. He is presumably to be identified with the Gaius of 1 Cor. 1:14, and may be the (Gaius?) Titius Justus of Acts 18:7. An Erastus is mentioned in Acts 19:22 and 2 Tim. 4:20. We do not know whether this is the same man. Of greater interest is that a Christian held such a responsible post in the local government of Corinth. Of Quartus nothing is known.