Contradiction with Isaiah 10:10-11
These verses express the Assyrian king's confidence in conquering lands, unlike Isaiah 37:12, which questions if the gods of those lands have saved them.
Isaiah 10:10-11: As my hand hath found the kingdoms of the idols, and whose graven images did excel them of Jerusalem and of Samaria;
Contradiction with Isaiah 46:9-10
Highlights God's unique sovereignty and declaration of outcomes, whereas Isaiah 37:12 questions the power of other gods to save.
Isaiah 46:9-10: Remember the former things of old: for I [am] God, and [there is] none else; [I am] God, and [there is] none like me,