Believer as former persecutor of the church

Scripture references

Acts 8:3 (ASV 1901)

3But Saul laid waste the church, entering into every house, and dragging men and women committed them to prison.

Philippians 3:6 (ASV 1901)

6as touching zeal, persecuting the church; as touching the righteousness which is in the law, found blameless.

Stories

Sundar Singh went from being a fierce hater of the Gospel, who led a gang that persecuted Christians and publicly burnt Bibles, to one who boldly declared: "I am a Christian. I can serve no one else but Jesus!" Arising from an encounter with Jesus; a fierce persecutor was now a believer.