Proverbs 15:13 (BSB)

A joyful heart makes a cheerful countenance, but sorrow of the heart crushes the spirit.

From Proverbs 15. Also in the ESV.

Commentary on Proverbs 15:13

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Proverbs 15:13: Here, 1. Harmless mirth is recommended to us, as that which contributes to the health of the body, making men lively and fit for business, and to the acceptableness of the conversation, making the face to shine and rendering us pleasant one to another.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Proverbs 15:13: A merry heart maketh a cheerful countenance,.... Or, a "joyful heart" (c); that is joyful in the God of its salvation; that rejoices in Christ Jesus; is filled with joy and peace through believing in him, in his person, blood, righteousness, and sacrifice; that has a comfortable view of his justification by his righteousness, of peace and pardon by his blood, of the atonement of...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Proverbs 15:13: maketh . . . countenance--or, "benefits the countenance." spirit is broken--and so the countenance is sad.
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Proverbs 15:13: Pro 15:13 13 A joyful heart maketh the countenance cheerful; But in sorrow of the heart the spirit is broken. The expression of the countenance, as well as the spiritual habitus of a man, is conditioned by the state of the heart.