ESV scriptures that show there is only one God.

Exodus 20:3 “You shall have no other gods before me.”

2 Samuel 22:32 “For who is God, but the Lord? And who is a rock, except our God?”

Isaiah 44:8 “Fear not, nor be afraid; have I not told you from of old and declared it? And you are my witnesses!Is there a God besides me? There is no Rock; I know not any.”

Psalm 50:1 “The Mighty One, God the Lord,  speaks and summons the earth from the rising of the sun to its setting.”

1 Cor 8:6 ” yet for us there is one God, the Father, from whom are all things and for whom we exist, and one Lord, Jesus Christ, through whom are all things and through whom we exist.”

Eph 4:6 ” one God and Father of all, who is over all and through all and in all.”

1 Tim 1:17;2:5 ” To the King of the ages, immortal, invisible, the only God, be honor and glory forever and ever. Amen… For there is one God, and there is one mediator between God and men, the man Christ Jesus,

James 2:19 “You believe that God is one; you do well. Even the demons believe—and shudder!”