Proverbs 19:21 (BSB)

Many plans are in a man’s heart, but the purpose of the LORD will prevail.

From Proverbs 19. Also in the ESV.

Commentary on Proverbs 19:21

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Proverbs 19:21: Here we have, 1. Men projecting. They keep their designs to themselves, but they cannot hide them from God; he knows the many devices that are in men's hearts, - devices against his counsels (as those, Psa 2:1-3; Mic 4:11), - devices without his counsel (no regard had to his providence, as those Jam 4:13, this and the other they will do, and not take...
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Proverbs 19:21: There are many devices in a man's heart,.... Some about civil things; to get wealth and riches: to obtain honour and glory among men; to attain to a long life, and to perpetuate their memories after death: some about sinful things; to gratify their carnal lusts and sensual appetites; and to do mischief to others, particularly the people of God, and the cause and interest...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Proverbs 19:21: (Compare Pro 16:1, Pro 16:9; Psa 33:10-11). The failure of man's devices is implied.
• Geneva Bible Notes (Reformed), Geneva Bible Study Notes on Proverbs 19:21: [There are] many devices in a man's heart; nevertheless the counsel of the LORD, that shall stand. (g) Man's device will not have success, unless God governs it, whose purpose is unchangeable.