New Defender's Study Bible Notes
21:29 Trophimus an Ephesian. Paul had brought several Gentile Christians with him to Jerusalem from various cities (Acts 20:4), presumably as evidence to the brethren of the power of the gospel among the Gentiles (Acts 21:19-20). Evidently when some of the Jews from Ephesus recognized Trophimus with Paul in the city, they jumped to the conclusion that he was also with Paul in the inner court of the temple. Jews, as approved by the Romans, had labeled this a capital crime.