Isaiah 45:5-6
I am the LORD, and there is no other; there is no God but Me. I will equip you for battle, though you have not known Me, / so that all may know, from where the sun rises to where it sets, that there is none but Me; I am the LORD, and there is no other.

Deuteronomy 4:35
You were shown these things so that you would know that the LORD is God; there is no other besides Him.

Isaiah 44:6
Thus says the LORD, the King and Redeemer of Israel, the LORD of Hosts: “I am the first and I am the last, and there is no God but Me.

1 Corinthians 8:4-6
So about eating food sacrificed to idols: We know that an idol is nothing at all in the world, and that there is no God but one. / For even if there are so-called gods, whether in heaven or on earth (as there are many so-called gods and lords), / yet for us there is but one God, the Father, from whom all things came and for whom we exist. And there is but one Lord, Jesus Christ, through whom all things came and through whom we exist.

John 17:3
Now this is eternal life, that they may know You, the only true God, and Jesus Christ, whom You have sent.

Isaiah 43:10-11
“You are My witnesses,” declares the LORD, “and My servant whom I have chosen, so that you may consider and believe Me and understand that I am He. Before Me no god was formed, and after Me none will come. / I, yes I, am the LORD, and there is no Savior but Me.

Exodus 15:11
Who among the gods is like You, O LORD? Who is like You—majestic in holiness, revered with praises, performing wonders?

Revelation 15:4
Who will not fear You, O Lord, and glorify Your name? For You alone are holy. All nations will come and worship before You, for Your righteous acts have been revealed.”

Isaiah 46:9
Remember what happened long ago, for I am God, and there is no other; I am God, and there is none like Me.

Jeremiah 10:6-7
There is none like You, O LORD. You are great, and Your name is mighty in power. / Who would not fear You, O King of nations? This is Your due. For among all the wise men of the nations, and in all their kingdoms, there is none like You.

Mark 12:29-32
Jesus replied, “This is the most important: ‘Hear O Israel, the Lord our God, the Lord is One. / Love the Lord your God with all your heart and with all your soul and with all your mind and with all your strength.’ / The second is this: ‘Love your neighbor as yourself.’ No other commandment is greater than these.” ...

1 Timothy 2:5
For there is one God, and there is one mediator between God and men, the man Christ Jesus,

Deuteronomy 6:4
Hear, O Israel: The LORD our God, the LORD is One.

Isaiah 37:16
“O LORD of Hosts, God of Israel, enthroned above the cherubim, You alone are God over all the kingdoms of the earth. You made the heavens and the earth.

Nehemiah 9:6
You alone are the LORD. You created the heavens, the highest heavens with all their host, the earth and all that is on it, the seas and all that is in them. You give life to all things, and the host of heaven worships You.