What does 1 Timothy 1:15 mean?

Paul continues his testimony, which began in verse 12. Here he uses a phrase unique to the Pastoral Epistles—1 and 2 Timothy and Titus—and used five times by Paul: "the saying is trustworthy." He will also use the phrase in 1 Timothy 3:1 and 4:9, as well as 2 Timothy 2:11 and Titus 3:8. Each time, the phrase emphasizes a particular point or quote Paul wants Timothy or Titus to remember.

In this verse, the statement to remember is, "Christ Jesus came into the world to save sinners, of whom I am the foremost." This quote may have become well known within the early churches after Paul wrote this letter. Other scholars see Paul using an existing statement to reinforce his point. As Paul matured in his faith, his writings reflected a man who transitioned from proud, to a new believer, to a mature believer who saw himself in complete need of God's grace. Like David, Paul saw himself as sinful from his mother's womb (Psalm 51:5).