9 But have nothing to do with foolish questionings, and lists of generations, and fights and arguments about the law; for they are of no profit and foolish. 10 A man whose opinions are not those of the church, after a first and second protest, is to be kept out of your society;

Matthew Henry's Commentary on Titus 3:9-10

Commentary on Titus 3:8-11

(Read Titus 3:8-11)

When the grace of God towards mankind has been declared, the necessity of good works is pressed. Those who believe in God, must make it their care to maintain good works, to seek opportunities for doing them, being influenced by love and gratitude. Trifling, foolish questions must be avoided, and subtle distinctions and vain inquiries; nor should people be eager after novelties, but love sound doctrine which tends most to edifying. Though we may now think some sins light and little, if the Lord awaken the conscience, we shall feel even the smallest sin heavy upon our souls.