Isaiah 43:25 - Ellicott's Commentary On The Whole Bible

I, even I... — As in Isaiah 1:2; Isaiah 1:18, the analogy with which may be noted as evidence of identity of authorship, the incisive words that prove the guilt of Israel are followed by the fullest offer of pardon on repentance. And this he does “for His own sake,” to manifest the everlasting righteousness which is also the everlasting love. The “blotting out” finds an echo in Colossians 2:14.