This is a view that scholars have called henotheism, in distinction from the view I have thus far been calling monotheism. Monotheism is the view that there is, in fact, only one God. Henotheism is the view that there are other gods, but there is only one God who is to be worshiped. The Ten Commandments express a henotheistic view, as does the majority of the Hebrew Bible. The book of Isaiah, with its insistence that “I alone am God, there is no other,” is monotheistic. It represents the minority view in the Hebrew Bible.
