Behold, the Lord GOD will help me; who is he that shall condemn me? lo, they all shall grow old as a garment; the moth shall eat them up.
All Commentaries on Isaiah 50:9 Go To Isaiah 50
Procopius of Gaza
AD 528
Isaiah also gives the name “moth” to those who devour their conscience in their recklessness.… It might be said that the moths are their sins, which worm their way in among those they inhabit, like moths devouring clothing for food. An attitude that inclines toward having no fear is indicative of a people on their way to this kind of ruin, yet who think they are indestructible. But punishment also clearly awaits them. They will be utterly consumed by misfortune as by a moth.