Psalm 37:4 (BSB)

Delight yourself in the LORD, and He will give you the desires of your heart.

From Psalms 37. Also in the ESV.

Commentary on Psalm 37:4

• John Calvin (Reformed), Calvin's Commentaries on Psalm 37:1-40: PSALM 37 This psalm, the title of which shows it to have been composed by David, contains most profitable instruction. Since the faithful, so long as they pursue their earthly pilgrimage through life, see things strangely confused in the world, unless they assuaged their grief with the hope of a better issue, their courage would soon fail them.
• C.H. Spurgeon (Reformed Baptist), The Treasury of David on Psalm 37:4: There is an ascent in this third precept. He who was first bidden not to fret, was then commanded actively to trust, and now is told with holy desire to delight in God. Delight thyself also in the Lord. Make Jehovah the joy and rejoicing of thy spirit.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Psalm 37:1-6: The instructions here given are very plain; much need not be said for the exposition of them, but there is a great deal to be done for the reducing of them to practice, and there they will look best. I. We are here cautioned against discontent at the prosperity and success of evil-doers (Psa 37:1, Psa 37:2): Fret not thyself, neither be thou envious.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Psalm 37:4: Commit thy way unto the Lord,.... Or "thy works", as in Pro 16:3; that is, all the affairs and business of life, which are a man's ways in which he walks; not that men should sit still, be inactive, and do nothing, and leave all to be done by the Lord; but should seek direction of God in everything engaged in, and for strength and...