Proverbs 14:30 (BSB)

A tranquil heart is life to the body, but envy rots the bones.

From Proverbs 14. Also in the ESV.

Commentary on Proverbs 14:30

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Proverbs 14:30: 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.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Proverbs 14:30: 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...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Proverbs 14:30: 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.
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Proverbs 14:30: Pro 14:30 30 A quiet heart is the life of the body, But covetousness is rottenness in the bones. Heart, soul, flesh, is the O.T. trichotomy, Psa 84:3; Psa 16:9; the heart is the innermost region of the life, where all the rays of the bodily and the soul-life concentrate, and whence they again unfold themselves.