His manner was - His custom was to attend on the worship of the synagogue, and to preach the gospel to his countrymen first, Acts 9:20; Acts 13:5, Acts 13:14.
Reasoned with them - Discoursed to them, or attempted to prove that Jesus was the Messiah. The word used here (διελέγετο dielegeto) often means no more than “to make a public address or discourse.” See the notes on Acts 24:25.
Out of the scriptures - By many critics this is connected with the following verse, “Opening and alleging from the scriptures that Christ must needs have suffered, etc.” The sense is not varied materially by the change.