The foregoing verse showed how much our reputation, this how much our health, depends on the good government of our passions and the preserving of the temper of the mind. 1. A healing spirit, made up of love and meekness, a hearty, friendly, cheerful disposition, is the life of the flesh; it contributes to a good constitution of body; people grow fat with good humour. 2. A fretful, envious, discontented spirit, is its own punishment; it consumes the flesh, preys upon the animal spirits, makes the countenance pale, and is the rottenness of the bones. Those that see the prosperity of others and are grieved, let them gnash with their teeth and melt away, Psa 112:10.
Rumpatur, quisquis rumpitur invidia.
Whoever bursts for envy, let him burst.

A sound heart is the life of the flesh,.... A heart made so by the grace of God, in which are sound principles of truth, righteousness, and holiness; these preserve from sin, and so from many diseases; whereby the life of the flesh or body is kept safe and sound, or that is kept in health and vigour; or a "quiet heart" (h); a heart free from wrath, anger, and envy, and such like passions and perturbations; this contributes much to the health of the body, and the comfort of life: or a "healing heart", or "spirit" (i); that is humane, kind, and friendly; that pities and heals the distresses of others, and makes up differences between persons at variance: such an one is "the life of fleshes" (k), as in the original text; or of men, of the same flesh and blood; the life of others, as well as of his own flesh; such an one contributes to the comfortable living of others as well as of himself;

but envy the rottenness of the bones; a man that envies the happiness and prosperity of others, this preys upon his own spirits, and not only wastes his flesh, but weakens and consumes the stronger parts of his body, the bones; it is as a "moth" within him, as the Arabic version: the Targum is,

"as rottenness in wood, so is envy in the bones;''

hence Ovid (l) calls it "livor edax", and so Martial (m).

(h) "cor leve", Baynus; "cor lene", Mercerus; "cor lenitatis", Gejerus, so Ben Melech. (i) "Animus sanans", Junius & Tremellius, so the Tigurine version; "sanator", Gussetius, p. 800. (k) "vitae carnium", Montanus; "vita carnium", V. L. Pagninus, Michaelis. (l) Amorum, l. 1. Eleg. 15. v. 1. & de Remed. Amor. l. 1. in fine. (m) Epigr. l. 11. Ep. 21.

A sound heart--both literally and figuratively, a source of health; in the latter sense, opposed to the known effect of evil passions on health.