Galatians 1:23
They had only heard it said about me, "This person, who had once persecuted us [Christians], is now preaching the faith he once made havoc of."
Acts 6:7
So, the message of God increased [in its influence] and the disciples multiplied in number greatly in Jerusalem, [so that even] a large number of [Jewish] priests became obedient to [the message of] the faith.
Acts 9:13
But Ananias answered, "Lord, I have heard from many people about how much harm this man has done to your holy people at Jerusalem.
Acts 9:20
And so Saul began proclaiming that Jesus was the Son of God in the synagogues [of the Damascus area].
Acts 9:26
And when he came [back] to Jerusalem, Saul attempted to associate himself with the disciples but they were afraid of him [because of his past], and could not believe that he was a [true] disciple.
1 Corinthians 15:8-10
Then last of all, He appeared to me also, as someone born abnormally. [Note: This probably refers to Paul being converted later than the rest of the apostles].
1 Timothy 1:13-16
[even] though I had previously spoken against Christ, and persecuted [Christians] and acted outrageously. However, I obtained mercy because I acted out of ignorance, not believing [in Christ].