Matthew Henry and continuators on Proverbs 21:29

29 A wicked man hardeneth his face: but as for the upright, he directeth his way.

Here is, 1. The presumption and impudence of a wicked man: He hardens his face—brazens it, that he may not blush—steels it, that he may not tremble when he commits the greatest crimes; he bids defiance to the terrors of the law and the checks of his own conscience, the reproofs of the word and the rebukes of Providence; he will have his way and nothing shall hinder him, Isa. lvii. 17. 2. The caution and circumspection of a good man: As for the upright, he does not say, What would I do? What have I a mind to? and that will I have; but, What should I do? What does God require of me? What is duty? What is prudence? What is for edification? And so he does not force his way, but direct his way by a safe and certain rule.