God is One, There is No Other
“Thus says the LORD, the King of Israel, and his Redeemer, the LORD of hosts: I am the first and I am the last; besides me there is no god” (Is. 44:6)
“I am the LORD, and there is no other; besides me there is no god. I arm you, though you do not know me” (Is. 45:5)
“so that they may know, from the rising of the sun and from the west, that there is no one besides me; I am the LORD, and there is no other” (Is. 45:6)
“Thus says the LORD: The wealth of Egypt and the merchandise of Ethiopia, and the Sabeans, tall of stature, shall come over to you and be yours, they shall follow you; they shall come over in chains and bow down to you. They will make supplication to you, saying, “God is with you alone, and there is no other; there is no god besides him.”” (Is. 45:14)
“For thus says the LORD, who created the heavens (he is God!), who formed the earth and made it (he established it; he did not create it a chaos, he formed it to be inhabited!): I am the LORD, and there is no other” (Is. 45:18)
“Declare and present your case; let them take counsel together! Who told this long ago? Who declared it of old? Was it not I, the LORD? There is no other god besides me, a righteous God and a Savior; there is no one besides me” (Is. 45:21)
“Turn to me and be saved, all the ends of the earth! For I am God, and there is no other” (Is. 45:22)
“remember the former things of old; for I am God, and there is no other; I am God, and there is no one like me” (Is. 46:9)
“See now that I, even I, am he; there is no god besides me. I kill and I make alive; I wound and I heal; and no one can deliver from my hand” (Deut. 32:39)
“So the scribe said to Him, “Well said, Teacher. You have spoken the truth, for there is one God, and there is no other but He” (Mark. 12:32)
“Therefore concerning the eating of things offered to idols, we know that an idol is nothing in the world, and that there is no other God but one” (1 Cor. 8:4)
The gods of other nations are not gods, but demons
“They sacrificed to demons, not to God, To gods they did not know, To new gods, new arrivals That your fathers did not fear” (Deut. 32:17)
“They even sacrificed their sons And their daughters to demons” (Ps. 106:37)
“For you provoked the one who made you by sacrificing to demons and not to God” (Bar. 4:7)
“No, I imply that what pagans sacrifice, they sacrifice to demons and not to God. I do not want you to be partners with demons” (1 Cor. 10:20)
“Can mortals make for themselves gods? Such are no gods!” (Jer. 16:20)
“How can I pardon you? Your children have forsaken me, and have sworn by those who are no gods. When I fed them to the full, they committed adultery and trooped to the houses of prostitutes” (Jer. 5:7)
“Formerly, when you did not know God, you were enslaved to beings that by nature are not gods” (Gal. 4:8)
“For all the gods of the peoples are idols, but the LORD made the heavens” (Ps. 96:5)
“and saying, “Men, why are you doing these things? We also are men with the same nature as you, and preach to you that you should turn from these useless things to the living God, who made the heaven, the earth, the sea, and all things that are in them” (Act. 14:15)
They do not save
“Assemble yourselves and come together, draw near, you survivors of the nations! They have no knowledge — those who carry about their wooden idols, and keep on praying to a god that cannot save” (Is. 45:20)