How do we know that Paul was truly converted?

The Apostle Paul's conversion is well-documented in Scripture, particularly in Acts and his own epistles. His radical change in behavior—from fervently persecuting Christians to preaching the very faith he sought to destroy—serves as a strong testament to his genuine encounter with Christ. In Galatians 1:23-24, Paul recounts how he was known for his previous life of persecution but later became a proclaimer of the grace he had once opposed. This transformation not only exemplifies God's power to save even the most unlikely individuals but also serves to glorify God, as the churches recognized the hand of divine intervention in Paul's life.