Galatians 1:23

"But they had heard only, That he which persecuted us in times past now preacheth the faith which once he destroyed."

Cross References (ranked by relevance)

Then Ananias answered, Lord, I have heard by many of this man, how much evil he hath done to thy saints at Jerusalem:

And straightway he preached Christ in the synagogues, that he is the Son of God.

And when Saul was come to Jerusalem, he assayed to join himself to the disciples: but they were all afraid of him, and believed not that he was a disciple.

Acts 6:7

And the word of God increased; and the number of the disciples multiplied in Jerusalem greatly; and a great company of the priests were obedient to the faith.