4 Hear, Israel: Yahweh is our God. Yahweh is one.
Bible verses about "polytheism" | WEB
Deuteronomy 6:4
Exodus 20:4-5
4 “You shall not make for yourselves an idol, nor any image of anything that is in the heavens above, or that is in the earth beneath, or that is in the water under the earth:
5 you shall not bow yourself down to them, nor serve them, for I, Yahweh your God, am a jealous God, visiting the iniquity of the fathers on the children, on the third and on the fourth generation of those who hate me,
John 1:1
1 In the beginning was the Word, and the Word was with God, and the Word was God.
Exodus 20:3
3 “You shall have no other gods before me.