Matthew Henry Commentary Titus 3:8-11

"Faithful is the saying, and concerning these things I desire that thou affirm confidently, to the end that they who have believed God may be careful to maintain good works. These things are good and profitable unto men: but shun foolish questionings, and genealogies, and strifes, and fightings about law; for they are unprofitable and vain. A factious man after a first and second admonition refuse; knowing that such a one is perverted, and sinneth, being self-condemned." — Titus 3:8-11 (ASV)

When the grace of God toward humanity has been declared, the necessity of good works is emphasized. Those who believe in God must be careful to maintain good works, seeking opportunities to do them, being influenced by love and gratitude.

Trifling, foolish questions must be avoided, as well as subtle distinctions and vain inquiries; nor should people be eager for novelties, but rather love sound doctrine, which is most edifying. Though we may now think some sins are light and little, if the Lord awakens the conscience, we will feel even the smallest sin heavy upon our souls.