Ye shall conceive chaff, ye shall bring forth stubble: your breath, as fire, shall devour you.
Ye - the enemy.
Shall conceive chaff - (Isaiah 26:18; Isaiah 59:4).
Your breath - your own spirit of anger and ambition, which impelled you against Jerusalem, shall be the cause of your being devoured by the fire of God's anger (2 Kings 18:19; 2 Kings 18:33-35; 2 Kings 19:22-28). The fire which you kindled and fanned with your breath, to devour others, shall devour yourself.
(As) fire, shall devour you - (Isaiah 30:28.)