Numbers 23:19,

God is not a man that He should lie, nor is He a mortal that He should relent. Would He say and not do, speak and not fulfill?

Deuteronomy 4:15,

And you shall watch yourselves very well, for you did not see any image on the day that the Lord spoke to you at Horeb from the midst of the fire.

Deuteronomy 4:35,

You have been shown, in order to know that the Lord He is God; there is none else besides Him.

Rashi: You have been shown: Heb. הָרְאֵתָ As the Targum [Onkelos] renders it: אִתְחִזֵיתָא, you have been shown. When the Holy One, blessed is He, gave the Torah, He opened for Israel the seven heavens, and just as He tore open the upper regions, so did He tear open the lower regions, and they saw that He is One. Accordingly, it is stated, “You have been shown, in order to know [that the Lord He is God-there is none else besides Him].”

Deuteronomy 4:39,

And you shall know this day and consider it in your heart, that the Lord He is God in heaven above, and upon the earth below; there is none else.

Deuteronomy 6:14,

Do not go after other gods, of the gods of the peoples who are around you.

Deuteronomy 32:39,

See now that it is I! I am the One, and there is no god like Me! I cause death and grant life. I strike, but I heal, and no one can rescue from My Hand!

I Samuel 2:2,

There is none as holy as Hashem, for there is none besides You, and there is no Rock like our God.

I Kings 8:27,

But will God indeed dwell on the earth? Behold the heaven and the heaven of heavens cannot contain You; much less this temple that I have erected.

I Kings 8:60,

so that all the peoples of the earth shall know that Hashem is God – there is no other.

Isaiah 40:18,

And to whom do you compare God, and what likeness do you arrange for Him?

Isaiah 40:25,

«Now, to whom will you compare Me that I should be equal?» says the Holy One.

Isaiah 42:8,

I am Hashem; that is My Name; I shall not give My glory to another, nor My praise to graven idols.

Isaiah 43:10-11,

10. «You are My witnesses,» says the Lord, «and My servant whom I chose,» in order that you know and believe Me, and understand that I am He; before Me no god was formed and after Me none shall be.

11. I, I am the Lord, and besides Me there is no Savior [מוֹשִׁיעַ]

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Isaiah 43:13,

Even before there was a day, I was He, and there is none who can save from My hand; when I act, who can reverse it?

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Isaiah 44:6-8,

6. Thus said Hashem, King of Israel and its Redeemer, Hashem, Master of Legions: I am the first and I am the last, and aside from Me there is no God.

7. Whoever will declare that he is like Me, let him proclaim it and set forth [all the events] since I emplaced the people of antiquity! And let them tell us coming events and what is yet to happen.

8. Be not afraid and be not terrified! Did I not make you hear of yore and tell you; and you are My witnesses: Is there a god aside from Me? There is no rock I do not know!

Isaiah 44:24,

Thus said Hashem, your Redeemer and the One Who formed you from the womb: I am Hashem, Who has made everything; Who spread out the heavens by Myself, and firmed the earth of My own accord.

Isaiah 45:5-7,

5. I am Hashem and there is no other; other than Me there is no God. I will gird you, though you did not know Me,

6. in order that those from east and west would know that there is nothing besides Me; I am Hashem, and there is no other.

7. [I am the One] Who forms light and creates darkness; Who makes peace and creates evil; I am Hashem, Maker of all these.

Isaiah 45:18,

For thus said Hashem, Creator of the heavens; He is the God, the One Who fashioned the earth and its Maker; He established it; He did not create it for emptiness; He fashioned it to be inhabited: I am Hashem and there is no other.

Isaiah 45:22,

Turn to Me and be saved, all the ends of the earth, for I am God, and there is no other.

Isaiah 46:5,

To whom can you liken Me, or consider equal, or compare Me that we should seem alike?

Isaiah 46:9,

Recall the early events of ancient times, [see] that I am God and there is no other; [I am] God and there is none like Me.

Jeremia 10:6,

There is none like You, O Lord

Hosea 13:4,

I am Hashem your God since the land of Egypt, and you should not have known any god besides Me, for there is no savior but Me.

Joel 2:27,

Then you will know that in the midst of Israel am I, and that I am Hashem your God, there is none other; and My people will to be shamed evermore.

Malachi 2:10,

Have we not all one Father? Did not one God create us [all]? Why, then, is one person betrayed by another,in order to defile the covenant of our forefathers?

If all people are descendants of one father, Adam, and were created by the same God, there is no reason to distinguish between Jews and non-Jews for ultimately all people are really brothers! (Abarbanel)

Psalms 73:25,

Whom have I in heaven? And beside You I wish for nothing on earth.

Whom have I [lit. who is for me] in heaven? The wicked have chosen various celestial bodies (sun, moon, or stars) as their gods. Others worship the ministering angels in heaven. I shun all these and rely on no one in heaven, except for You (Rashi; Radak).

And beside You I wish for nothing on earth. Others worship the terrestrial forces, namely, the four elements: water, fire, earth, and wind. I have no interest in these either. I turn to You alone for my salvation (Radak; Sforno).

Nehemiah 9:6,

You alone are Hashem; You made the heavens, the most exalted heavens and all their legion, the earth and all that is upon it, the seas and all that is in them, and you give them all life; and the heavenly legion bows to You.

I Chronicles 17:20,

Hashem, there is none like You and there is no god besides You, like all that we have heard with our ears.