How did Paul understand his conversion?

Paul's conversion, as narrated in Galatians 1:15-16, highlights that it was purely God's grace that called him. He did not seek to earn his salvation through his rigorous Jewish practices; rather, it was God's sovereign decision to reveal His Son to him that changed his life. Throughout the New Testament, Paul emphasizes that he was not worthy of this call and illustrates that genuine conversion involves recognizing one's utter dependence on God’s grace for transformation and salvation, as he once zealously opposed the very gospel he now preaches.