I, even I, am he that blots out your transgressions for my own sake, and will not remember your sins.
All Commentaries on Isaiah 43:25 Go To Isaiah 43
John Chrysostom
AD 407
Groan bitterly, sacrifice confession (for, he says, “Declare first your transgressions that you may be justified”), sacrifice contrition of heart. These victims turn not to ashes or dissolve into smoke or melt into air. They do not need wood and fire but only a deep-pricked heart. This is wood; this is fire to burn, yet not consume them. For one who prays with earnestness is burned yet not consumed, but like gold that is tested by fire becomes brighter.