Adam Clarke on Isaiah 40:20

Chooseth a tree that will not rot - For what? To make a god out of it! The rich we find made theirs of gold and silver; the poor man was obliged to put up with a wooden god! From the words "he that hath no oblation chooseth a tree," we may learn that the gold and silver necessary to make the graven image was first dedicated, and then formed into a god! How stupid is idolatry! Strange that these people did not perceive that there could be no help in these molten and wooden idols!