When thou with rebukes dost correct man for iniquity, thou makest his beauty to consume away like a moth: surely every man is vanity. Selah.
When thou with rebukes dost correct man. God's word of 'rebuke' is equivalent to punishment in act; because His Word effects His will.
Thou makest his beauty to consume away like a moth - i:e., like as a moth consumes a garment, however beautiful heretofore, so that it is fit neither for ornament or use, so God makes to consume (literally, dissolves) man's beauty (chamudo) - literally, 'all that is desirable in or about him.'
Surely every man is vanity - Hebrew ( 'ak (H389)), 'only (i:e., nothing but) vanity is every man.' He uses the same plea as in Psalms 39:5, end, but in a different spirit. There it was a complaint against God, here it is a humble appeal to move His compassion. The same words mean a very different thing, according to the spirit in which they are spoken.