Albert Barnes' Notes on the Whole Bible - Acts 18:13
Contrary to the law - Evidently intending contrary to all law - the laws of the Romans and of the Jews. It was permitted to the Jews to worship God according to their own views in Greece; but they could easily pretend that Paul had departed from that mode of worshipping God. It was easy for them to maintain that he taught contrary to the laws of the Romans and their acknowledged religion; and their design seems to have been to accuse him of teaching people to worship God in an unlawful and... read more
The Pulpit Commentary - Acts 18:13
Man for fellow, A.V. The A.V. was intended to express the contemptuous feeling often implied in οὖτος ( Luke 23:1-56 . 2; Matthew 12:24 ; Acts 5:28 , etc.). Contrary to the Law ; meaning, as it naturally would in the mouth of a Jew, the Law of Moses. Hence Gallio's answer in Acts 18:15 , "If it be a question … of your Law, look ye to it." The very phrase, to "worship God," had a technical sense (see above, Acts 18:7 ). Paul, they said, professed to make proselytes, and... read more