Acts 9:19-22 NIV
and after taking some food, he regained his strength.
Saul spent several days with the disciples in Damascus. At once he began to preach in the synagogues that Jesus is the Son of God. All those who heard him were astonished and asked, “Isn’t he the man who raised havoc in Jerusalem among those who call on this name? And hasn’t he come here to take them as prisoners to the chief priests?” Yet Saul grew more and more powerful and baffled the Jews living in Damascus by proving that Jesus is the Messiah.
NIV: New International Version