Acts 26:4

My manner of life from my youth, which was at the first among mine own nation at Jerusalem, know all the Jews;

The verse opens Paul's account of his manner of life and conduct from his youth, lived at the first among his own nation at Jerusalem. That life and experience was known to all the Jews. His defense before Agrippa is set within that account of his life among his own people in Jerusalem.

The verse belongs to Paul's defense before Agrippa, where his case brought the gospel for which he was imprisoned before princes and nobles. His account of his conversion was also related before kings and governors as a testimony about Jesus. In this way his testimony before rulers placed the gospel itself before rulers.

Paul's speech before Agrippa, to which the verse belongs, is a model of dignified courtesy and persuasive eloquence. It exemplifies true courtesy expressed with persuasive eloquence. It illustrates that Christian courtesy can be expressed with persuasive eloquence.