C. H. Spurgeon comments in “The Treasury of David,”:
For the Lord upholdeth him with his hand. Condescendingly, with his own hand, God upholds his saints; he does not leave them to mere delegated agency, he affords personal assistance. Even in our falls the Lord gives a measure of sustaining. Where grace does not keep from going down, it shall save from keeping down. Job had double wealth at last, Joseph reigned over Egypt, Jonah was safely landed. It is not that the saints are strong, or wise, or meritorious, that therefore they rise after every fall, but because God is their helper, and therefore none can prevail against them.
Knowing God through His Word ... Day by Day 