God Is Faithful.
Your mercy, O Lord, is in the heavens; Your faithfulness reaches to the clouds. Psalm 36:5 NKJV
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,
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,
The transcendent perfections of the divine nature. Among men we have often reason to complain, There is no truth nor mercy, (Hosea 4:1), no judgment nor justice, Isaiah 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.
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. On earth we meet with little content and a great deal of disquiet and disappointment but in the heavens, where the mercy of God reigns in perfection and to eternity, there is all satisfaction there therefore, if we would be easy, let us have our conversation, and there let us long to be. How bad soever the world is, let us never think the worse of God nor of his government but, from the abundance of wickedness that is among men, let us take occasion, instead of reflecting upon God's purity, as if he countenanced sin, to admire his patience, that he bears so much with those that so impudently provoke him, nay, and causes his sun to shine and his rain to fall upon them. If God's mercy were not in the heavens (that is, infinitely above the mercies of any creature), he would, long ere this, have drowned the world again. See Isaiah 55:8,9; Hosea 11:9.
He is a God of inviolable truth: Thy faithfulness reaches unto the clouds. Though God suffers wicked people to do a great deal of mischief, yet he is and will be faithful to his threatenings against sin, and there will come a day when he will reckon with them he is faithful also to his covenant with his people, which cannot be broken, nor one jot or tittle of the promises of it defeated by all the malice of earth and hell. This is matter of great comfort to all good people, that, though men are false, God is faithful men speak vanity, but the words of the Lord are pure words. God's faithfulness reaches so high that it does not change with the weather, as men's does, for it reaches to the skies (so it should be read, as some think), above the clouds, and all the changes of the lower region. - Matthew Henry