A wise man feareth - He can never trust in himself, though he be satisfied from himself. He knows that his suffiency is of God; and he has that fear that causes him to depart from evil, which is a guardian to the love he feels. Love renders him cautious; the other makes him confident. His caution leads him from sin; his confidence leads him to God.

A wise man feareth, and departeth from evil,.... He fears God, and is careful not to offend him; wherefore he departs from sin, stands at a distance from it, abstains from all appearance of it; being influenced by the goodness and grace of God unto him, he fears the Lord and his goodness, and therefore avoids all occasions of sinning against him: his motive is not merely fear of punishment, as Jarchi, but a sense of goodness; and now, as it is through the influence of divine fear that men depart from evil; so to do this shows a good understanding, and that such a man is a wise man, Proverbs 16:6;
but the fool rageth, and is confident; he fears neither God nor men, he sets his mouth against both; he "rages" in heart, if not with his mouth, against God and his law, which forbid the practice of such sins he delights in; and against all good men, that admonish him of them, rebuke him for them, or dissuade him from them: and "is confident" that no evil shall befall him; he has no concern about a future state, and is fearless of hell and damnation, though just upon the precipice of ruin; yet, as the words may be rendered, "he goes on confidently", nothing can stop him; he pushes on, regardless of the laws of God or men, of the advices and counsels of his friends, or of what will be the issue of his desperate courses in another world.

Holy fear guards against every thing unholy.

(Compare Proverbs 3:7; Proverbs 28:14).
rageth--acts proudly and conceitedly.

16 The wise feareth and departeth from evil;
But the fool loseth his wits and is regardless.
Our editions have ירא with Munach, as if חכם ירא were a substantive with its adjective; but Cod. 1294 has חכם with Rebia, and thus it must be: חכם is the subject, and what follows is its complex predicate. Most interpreters translate 16b: the fool is over-confident (Zckler), or the fool rushes on (Hitzig), as also Luther: but a fool rushes wildly through, i.e., in a daring, presumptuous manner. But התעבּר denotes everywhere nothing else than to fall into extreme anger, to become heated beyond measure, Proverbs 26:17 (cf. Proverbs 20:2), Deuteronomy 3:26, etc. Thus 16a and 16b are fully contrasted. What is said of the wise will be judged after Job 1:1, cf. Psalm 34:15; Psalm 37:27 : the wise man has fear, viz., fear of God, or rather, since האלהים is not directly to be supplied, that careful, thoughtful, self-mistrusting reserve which flows from the reverential awe of God; the fool, on the contrary, can neither rule nor bridle his affections, and without any just occasion falls into passionate excitement. But on the other side he is self-confident, regardless, secure; while the wise man avoids the evil, i.e., carefully goes out of its way, and in N.T. phraseology "works out his own salvation with fear and trembling."

Feareth - Trembles at God's judgments when they are either inflicted or threatened. Rageth - Frets against God; or is enraged against his messengers. Confident - Secure and insensible of his danger.