Yea, there is no God... — Literally, no Rock. That word, as expressing eternal strength, being used, as in Deuteronomy 32:4; 2 Samuel 22:3; 2 Samuel 23:3, as a Divine name.
Related Commentaries of Isaiah 44:8
Isaiah 44:8
8 Fear ye not, neither be afraid: have not I told thee from that time, and have declared it? ye are even my witnesses. Is there a God beside me? yea, there is no God;a I know not any.