Psalms 36:5

David, having looked round with grief upon the wickedness of the wicked, here looks up with comfort upon the goodness of God, a subject as delightful as the former was distasteful and very proper to be set in the balance against it. Observe, I. His meditations upon the grace of God. He sees the world polluted, himself endangered, and God dishonoured, by the transgressions of the wicked; but, of a sudden, he turns his eye, and heart, and speech, to God "However it be, yet thou art good." He here acknowledges, 1. The transcendent perfections of the divine nature. Among men we have often reason to complain, There is no truth nor mercy, (Hos 4:1), no judgment nor justice, Isa 5:7. But all these may be found in God without the least alloy. Whatever is missing, or amiss, in the world, we are sure there is nothing missing, nothing amiss, in him that governs it. (1.) He is a God of inexhaustible goodness: Thy mercy, O Lord! is in the heavens. If men shut up the bowels of their compassion, yet with God, at the throne of his grace, we shall find mercy. When men are devising mischief against us God's thoughts concerning us, if we cleave closely to him, are thoughts of good.

— Matthew Henry's Concise Commentary (public domain)

mercy . . . and . . . faithfulness--as mercy and truth (Psa 25:10).

— Jamieson-Fausset-Brown Commentary (public domain)