Verse 8. - They stand fast forever and ever. This is exegetical of the "sure" in ver. 7. In the sense in which they were given - the spiritual sense underlying them - not one jot or tittle of God's commandments ever passes away (Matthew 5:18). And are done in truth and uprightness; rather, being done. It is the intrinsic truth and equity of the commandments that render them ever lasting and unchangeable (see Cudworth on 'Immutable Morality').

111:1-10 The Lord is to be praised for his works. - The psalmist resolves to praise God himself. Our exhortations and our examples should agree together. He recommends the works of the Lord, as the proper subject, when we are praising him; and the dealings of his providence toward the world, the church, and particular persons. All the works of the Lord are spoken of as one, it is his work; so admirably do all the dispensations of his providence centre in one design. The works of God, humbly and diligently sought into, shall all be found just and holy. God's pardoning sin is the most wonderful of all his works, and ought to be remembered to his glory. He will ever be mindful of his covenant; he has ever been so, and he ever will be so. His works of providence were done according to the truth of the Divine promises and prophecies, and so were verity, or truth; and by him who has a right to dispose of the earth as he pleases, and so are judgment, or righteous: and this holds good of the work of grace upon the heart of man, ver. 7,8. All God's commandments are sure; all have been fulfilled by Christ, and remain with him for a rule of walk and conversation to us. He sent redemption unto his people, out of Egypt at first, and often afterwards; and these were typical of the great redemption, which in the fulness of time was to be wrought out by the Lord Jesus. Here his everlasting righteousness shines forth in union with his boundless mercy. No man is wise who does not fear the Lord; no man acts wisely except as influenced by that fear. This fear will lead to repentance, to faith in Christ, to watchfulness and obedience. Such persons are of a good understanding, however poor, unlearned, or despised.They stand fast for ever and ever,.... Not only the covenant and its promises do, but both law and Gospel, the commandments of the one and the doctrines of the other; the law is an eternal law, as to the matter of it, and is not made void by faith, but established; and the Gospel is an everlasting Gospel, which lives and abides for ever, being established upon the word of God, which cannot be broken; and is continued in the church, the pillar and ground of truth, from whence it can never be removed.

And are done in truth and uprightness; either made by the Lord according to the truth of things, the moral perfections of his nature and will, and the rectitude of it; or observed by men that truly fear the Lord with great truth and sincerity.