Verse 24. - Though he fall, he shall not be utterly cast down. "The difference," as Hengstenberg observes, "is that between misfortune or loss, and absolute ruin." The good man may be afflicted; he may even fall into some fault (Galatians 6:1) or grievous sin (2 Samuel 11:4); but so long as "the root of the matter is in him" (Job 19:28), God will not suffer him to be prostrated. For the Lord upholdeth him with his hand; literally, the Lord supports his hand. If he falls, God (as Luther says) "catches him by the hand, and raises him up again." So David had himself experienced (2 Samuel 12:13).

37:21-33 The Lord our God requires that we do justly, and render to all their due. It is a great sin for those that are able, to deny the payment of just debts; it is a great misery not to be able to pay them. He that is truly merciful, will be ever merciful. We must leave our sins; learn to do well, and cleave to it. This is true religion. The blessing of God is the spring, sweetness, and security of all earthly enjoyments. And if we are sure of this, we are sure not to want any thing good for us in this world. By his grace and Holy Spirit, he directs the thoughts, affections, and designs of good men. By his providence he overrules events, so as to make their way plain. He does not always show them his way for a distance, but leads them step by step, as children are led. God will keep them from being ruined by their falls, either into sin or into trouble, though such as fall into sin will be sorely hurt. Few, if any, have known the consistent believer, or his children, reduced to abject, friendless want. God forsakes not his saints in affliction; and in heaven only the righteous shall dwell for ever; that will be their everlasting habitation. A good man may fall into the hands of a messenger of Satan, and be sorely buffeted, but God will not leave him in his enemy's hands.Though he fall,.... Into temptation, and by it into sins, and these very great ones; from a lively and comfortable exercise of grace, and a degree of steadfastness in the doctrine of grace:

he shall not be utterly cast down; because he is in the arms of everlasting love, and in the hands of Christ Jesus; is on him as the sure foundation, and is kept by the power of God through faith unto salvation, and so shall not perish, but have everlasting life;

for the Lord upholdeth him with his hand; with the right hand of his righteousness, and keeps him from falling finally and totally; see Isaiah 41:10; and See Gill on Psalm 37:17.