Which of Paul's letters were written at the end of his ministry?
The letters written toward the end of Paul's ministry include 1st and 2nd Timothy, Ephesians, Philippians, Colossians, Philemon, and Titus. These came after the earlier letters: 1st and 2nd Thessalonians, Galatians, Romans, and Corinthians. Paul's letters are not arranged chronologically in the New Testament.
Les explains that the Church Age was never revealed until the Apostle Paul, and doctrinally the Church must go to Paul's letters for faith and practice. He notes that Paul's letters are not in chronological order. The first letters written were 1st and 2nd Thessalonians, then probably Galatians and Romans, and then perhaps the Corinthians. Later, toward the end of his ministry, the prison epistles—1st and 2nd Timothy, Ephesians, Philippians, Colossians, Philemon, and Titus—were written. Les also points out that the Holy Spirit was in total control of Paul's apostleship, as evidenced by the consistent order of Paul's letters in every New Testament manuscript.