Charles Ellicott Commentary 2 Kings 19:13

"Where is the king of Hamath, and the king of Arpad, and the king of the city of Sepharvaim, of Hena, and Ivvah?" — 2 Kings 19:13 (ASV)

The king. —Compare 2 Kings 18:34, from which, as well as from the sequence of thought in 2 Kings 19:12–13 here, it is clear that “king” is here used as a synonym of local god. (Psalms 5:2: “My King, and my God.”)