'Persecutor' in the Bible

They only heard it said, "He who was once our persecutor is now telling the Good News of the faith of which he formerly made havoc."

As for my zeal, I was a persecutor of the church. As far as righteousness in the Law is concerned, I was blameless.

Who was before a blasphemer, and a persecutor, and injurious: but I obtained mercy, because I did it ignorantly in unbelief.