This is a faithful saying: we had this phrase before, 1 Timothy 1:15, 1 Timothy 3:1 4:9 2 Timothy 2:11. It may be applied to what went before, or what follows. And these things I will that thou affirm constantly; this is the doctrine I would have thee preach, maintain, and stand to. That they which have believed in God might be careful to maintain good works; that those who assent to these things as true, and have cast their souls upon God and Jesus Christ for the fulfilling of them, may (considering good works are the condition annexed to the promise of this eternal life and salvation) be careful to practise all that God hath commanded them in all their relations. These things are good and profitable unto men; all these things are true in themselves, and profitable for men to know and understand.
Related Commentaries of Titus 3:8
Titus 3:8
8 This is a faithful saying, and these things I will that thou affirm constantly, that they which have believed in God might be careful to maintain good works. These things are good and profitable unto men.