My manner of life from my youth, which was at the first among mine own nation at Jerusalem, know all the Jews; My manner of life, etc. - The apostle means to state that, though born in Tarsus, he had a regular Jewish education, having been sent up to Jerusalem for that purpose; but at what age does not appear; probably about twelve, for at this age the male children were probably brought to the annual solemnities. See on Luke 2:41 (note).
Related Commentaries of Acts 26:4
Acts 26:4
4 My manner of life from my youth, which was at the first among mine own nation at Jerusalem, know all the Jews;