He that hath a froward heart findeth no good: and he that hath a perverse tongue falleth into mischief.

Wesley's Notes

17:20 No good - Shall not get that advantage which he expects.

King James Translators' Notes

He that hath a froward...: Heb. The froward of heart

Jamieson-Fausset-Brown Bible Commentary

20. The second clause advances on the first. The ill-natured fail of good, and the cavilling and fault-finding incur evil.

Matthew Henry's Concise Commentary

17:19. If we would keep a clear conscience and a quiet mind, we must shun all excitements to anger. And a man who affects a style of living above his means, goes the way to ruin. 20. There is nothing got by ill designs. And many have paid dear for an unbridled tongue. 21. This speaks very plainly what many wise and good men feel very strongly, how grievous it is to have a foolish, wicked child. 22. It is great mercy that God gives us leave to be cheerful, and cause to be cheerful, if by his grace he gives us hearts to be cheerful. 23. The wicked are ready to part with their money, though loved, that they may not suffer for their crimes. 24. The prudent man keeps the word of God continually in view. But the foolish man cannot fix his thoughts, nor pursue any purpose with steadiness. 25. Wicked children despise the authority of their father, and the tenderness of their mother. 26. It is very wrong to find fault for doing what is duty. 27,28. A man may show himself to be a wise man, by the good temper of his mind, and by the good government of his tongue. He is careful when he does speak, to speak to the purpose. God knows his heart, and the folly that is bound there; therefore he cannot be deceived in his judgment as men may be.

Matthew Henry's Whole Bible Commentary

Verse 20

Note, 1. Framing ill designs will be of no advantage to us; there is nothing got by them: He that has a froward heart, that sows discord and is full of resentment, cannot promise himself to get by it sufficient to counterbalance the loss of his repose and reputation, nor can he take any rational satisfaction in it; he finds no good. 2. Giving ill language will be a great disadvantage to us: He that has a perverse tongue, spiteful and abusive, scurrilous or backbiting, falls into one mischief or other, loses his friends, provokes his enemies, and pulls trouble upon his own head. Many a one has paid dearly for an unbridled tongue.