Deuteronomy 4:39

Then he said, “Tomorrow.” So he said, “May it be according to your word, that you may know that there is no one like Yahweh our God.

“To you it was shown that you might know that Yahweh, He is God; there is no other besides Him.

“Hear, O Israel! Yahweh is our God, Yahweh is one!

“You shall know therefore that Yahweh your God, He is God, the faithful God, who keeps His covenant and His lovingkindness to a thousand generations with those who love Him and keep His commandments;

“Yahweh alone guided him, And there was no foreign god with him.

“Indeed we heard it, and our hearts melted, and a courageous spirit no longer rose up in any man because of you; for Yahweh your God, He is God in heaven above and on earth beneath.

and he said, “O Yahweh, the God of our fathers, are You not God in the heavens? And are You not ruler over all the kingdoms of the nations? Power and might are in Your hand so that no one can take their stand against You.

‘Do not be in dread and do not be afraid; Have I not long since caused it to be heard to you and declared it? And you are My witnesses. Is there any God besides Me, Or is there any other Rock? I know of none.’”

Therefore, concerning the eating of things sacrificed to idols, we know that an idol is nothing in the world, and that there is no God but one.

yet for us there is one God, the Father, from whom are all things and we exist for Him, and one Lord, Jesus Christ, by whom are all things, and we exist through Him.