4 Hear, O Israel, the Lord our God is one Lord.
Bible verses about "polytheism" | DouayRheims
Deuteronomy 6:4
Exodus 20:4-5
4 Thou shalt not make to thyself a graven thing, nor the likeness of any thing that is in heaven above, or in the earth beneath, nor of those things that are in the waters under the earth.
5 Thou shalt not adore them, nor serve them: I am the Lord thy God, mighty, jealous, visiting the iniquity of the fathers upon the children, unto the third and fourth generation of them that 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 Thou shalt not have strange gods before me.