Acts 9:27-28

27Then Barnabas took an interest in Saul and brought him to the apostles. Barnabas told the apostles how Saul had seen the Lord on the road and that the Lord had spoken to him. Barnabas also told them how boldly Saul had spoken about the one named Jesus in the city of Damascus.

28Then Saul went throughout Jerusalem with the disciples. He spoke boldly with the power and authority of the Lord.