A merry heart doeth good like a medicine: but a broken spirit drieth the bones.

Wesley's Notes

17:22 Doth good - Even to the body; it contributes much to bodily health and vigour. Drieth - Wastes the marrow of the bones, and the moisture and strength of the body.

King James Translators' Notes

like: or, to

Jamieson-Fausset-Brown Bible Commentary

22. (Compare Pr 14:30; 15:13). The effect of the mind on the body is well known.

medicine-or, "body," which better corresponds with "bone."

drieth-as if the marrow were exhausted.

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 22

Note, 1. It is healthful to be cheerful. The Lord is for the body, and has provided for it, not only meat, but medicine, and has here told us that the best medicine is a merry heart, not a heart addicted to vain, carnal, sensual mirth; Solomon himself said of that mirth, It is not medicine, but madness; it is not food, but poison; what doth it? But he means a heart rejoicing in God, and serving him with gladness, and then taking the comfort of outward enjoyments and particularly that of pleasant conversation. It is a great mercy that God gives us leave to be cheerful and cause to be cheerful, especially if by his grace he gives us hearts to be cheerful. This does good to a medicine (so some read it); it will make physic more efficient. Or it does good as a medicine to the body, making it easy and fit for business. But, if mirth be a medicine (understand it of diversion and recreation), it must be used sparingly, only when there is occasion, not turned into food, and it must be used medicinally, sub regimine-as a prescribed regimen, and by rule. 2. The sorrows of the mind often contribute very much to the sickliness of the body: A broken spirit, sunk by the burden of afflictions, and especially a conscience wounded with the sense of guilt and fear of wrath, dries the bones, wastes the radical moisture, exhausts the very marrow, and makes the body a mere skeleton. We should therefore watch and pray against all melancholy dispositions, for they lead us into trouble as well as into temptation.