The boast is natural. The Assyrians had had an uninterrupted career of success, and might well believe that their gods were more powerful than those of the nations with whom they had warred. It is not surprising that they did not understand that their successes hitherto had been allowed by the very God, Yahweh, against whom they were now boasting themselves.
Related Commentaries of 2 Kings 18:33
2 Kings 18:33
33 Hath any of the gods of the nations delivered at all his land out of the hand of the king of Assyria?