'God of Gods' in the Bible

The king answered Daniel and said, Of a truth it is that your God is the God of gods, and the Lord of kings, and a revealer of secrets, because thou wast able to reveal this secret.

And the king shall do according to his will; and he shall exalt himself, and magnify himself above every god, and speak monstrous things against the God of gods; and he shall prosper until the indignation be accomplished: for that which is determined shall be done.