We get a few glimpses of what Paul thought of Titus in 2 Corinthians 8:16-17, 23 and 7:13.
V.1 Titus receives instructions from Paul on how to bring proper behavior and order to the assemblies, on the Island of Crete. In Paul’s letters to Timothy “doctrine” is more often mentioned, but in this letter to Titus, Paul stresses behavior.
V.2 Let us remember that Christianity is not an improvement of Jewish religion. It is something entirely new, and we are here told that it was in the heart of God before the world began.
V.3 God’s thoughts, from a past eternity, are revealed now through His Word. Paul’s teachings are according to the commandment of God our Savior.
V.5 The purpose of Titus being left at Crete, and the purpose of this letter. He was to appoint elders in every assembly. In the following verses we have instructions as to who would make a suited elder, and by this commission, Titus had the authority of the Apostle Paul to appoint them. Today, we have the Scriptures to show us the proper qualifications of a man who would be suited to act as an elder or shepherd, but today we do not have apostolic authority to appoint them. There are no official elders today according to the mind of God in His Word.
V.9 “Sound doctrine” (good instructions) will result in proper behavior to the glory of God.
V.10-11 Again and again we see false teachers trying to bring Christians under the law. Their mouths are to be stopped.