Acts 9:20-22

Within the hour he was in the synagogues, preaching about Jesus and proclaiming, “Jesus is the Son of God!” Those who heard him were astonished, saying among themselves, “Isn’t this the Saul who furiously persecuted those in Jerusalem who called on the name of Jesus? Didn’t he come here with permission from the high priest to drag them off and take them as prisoners?” Saul’s power increased greatly as he became more and more proficient in proving that Jesus was the anointed Messiah. Saul remained there for several days with the disciples, even though it agitated the Jews of Damascus.