Psalms 18:21

21.For I have kept the ways of Jehovah. He had spoken in the preceding verse of the cleanness of his hands, but finding that men judged of him perversely, and were very active in spreading evil reports concerning him, (414) he affirms that he had kept the ways of the Lord, which is equivalent to his appealing the matter to the judgment-seat of God. Hypocrites, it is true, are accustomed confidently to appeal to God in the same way; yea, there is nothing which they are more forward in doing than in dallying with the sacred name of God, and making it a cover to conceal their hypocrisy; but David brings forward nothing which men might not have certainly known to be true, if any regard to justice had existed among them. Let us, therefore, from his example, endeavor above all things to have a good conscience. And, in the second place, let us have the magnanimity to despise the false judgments of men, and to look up to heaven for the vindicator of our character and cause. He adds, I have not wickedly departed from my God This implies, that he always aimed directly at the mark of his calling, although the ungodly attempted many things to overthrow his faith. The verb which he uses does not denote one fall only, but a defection which utterly removes and alienates a man from God. David, it is true, sometimes fell into sin through the weakness of the flesh, but he never desisted from following after godliness, nor deserted the service to which God had called him.