Monotheism and the Sons of God

The significance of the term “sons of God” is that it often refers to the members of the divine council, which seems to be in conflict with the concept of monotheism. Deuteronomy 32 appears to contain two contrasting concepts, one which denies the existence of other gods (Deut 32:12, 21, 39, cf. 4:35, 39) and the other which assumes their existence (Deut 32:8, 43). Therefore the question is whether the “sons of God” really exist and what is their relationship with Yahweh?