I am, hopefully not unwarrantedly, somewhat fond of this one among my efforts. It lives and plays around in Psalm 92, which is a great psalm, among other things teaching that it is the stupid man who does not understand that the wicked are raised up only to be destroyed evermore (vv. 6-7). “Why do the wicked prosper?” therefore, to be a legitimate question when it arises, is not so much about the fact that such a situation could be, but about the timing of it: “Why do the wicked still prosper? God, when will You judge on behalf of Your godly ones?”
But I don’t touch on that. Can’t hit everything.
This hymn is about strength, and faithfulness, and the strength of faithfulness, and the joy and hope we have looking expectantly to God to be our supply today and in times to come. We are the work of His Hands; we are His workmanship. He is righteous (full stop). And He does righteously in making us righteous in Him.
Our God is a rock, and in Him there is found
unrighteousness nary a speck or a strand –
How great are Your works! Your inventions profound!
So sing we for joy at the work of Your Hand.
One other thing the psalm itself touches on that I, here, don’t, is that the righteous man, being like a tree, even in old age has strong, youthful sap running through him (vv. 12-14). Thus those saints around you who may look the feeblest may in fact be otherwise than they appear.