Psalms 62:12

Also unto thee, O Lord, [belongeth] mercy
This is the other thing the psalmist had heard, and was assured of, and which encouraged his hope and trust in the Lord; that mercy belonged to him, ( Psalms 130:7 ) ; as appears, not only from the common bounties of his providence, daily bestowed upon his creatures; but from the special gift of his Son, and of all spiritual mercies and blessings in him; from the regeneration of the Lord's people, the pardon of their sins, and their eternal salvation;

for thou renderest to every man according to his work;
and which is a reason proving that both power and mercy belong to God; power in punishing the wicked according to their deserts, and mercy in rewarding the saints, not in a way of merit, or of debt, but of grace. Some interpret the words, as Aben Ezra and Kimchi observe, "though thou renderest" that is, God is gracious and merciful, though he is also just and righteous in rendering to every man as his work is, whether it be good or evil.