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.

A merry heart doth good like a medicine,.... Does the body good, makes it healthful and vigorous. Cheerfulness of spirit has a great influence upon the body, and much contributes to the health and welfare of it; see Ecc 9:7; and especially a heart full of spiritual joy, peace of conscience, flowing from the blood of Christ, joy in the Holy Ghost, a rejoicing in Christ Jesus and his righteousness, and in hope of the glory of God, much affect even the outward man. Or, "a merry heart makes a good medicine" (x); it is a good medicine of itself; raises the spirits, invigorates the body, and fits it for service and business: or, "does a medicine good" (y); makes that operate kindly, and to a good purpose: or, as Jarchi, makes the countenance shine well, makes a serene countenance; which Schultens approves, and, from the use of the word in the Arabic language, confirms;

but a broken spirit drieth the bones; a spirit broken with sorrow, whether on spiritual or temporal accounts; as it weakens the nerves, it dries up the marrow in the bones, and emaciates the body, and reduces it to a skeleton: the joy or grief of the mind, those passions of the soul, have a very great influence upon the body, either for its good or hurt.

(x) "cor hilare bonam facit sanationem", Michaelis. (y) So R. Joseph Kimchi; "bonificat sive meliorem reddit medicinam", some in Valablus; "bene medicinam facit", Junius & Tremellius, Piscator.

(Compare Pro 14:30; Pro 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.