The works — All that he doth on the behalf of his people, or against their enemies. Truth — Are exactly agreeable to his promises, and to justice. Commandments — His laws given to the Israelites, especially the moral law. Sure — Constant and unchangeable.
Related Commentaries of Psalms 111:7
Psalms 111:7
7 The works of his hands are verity and judgment; all his commandments are sure.