Ephesians 4:1-6

As a prisoner for the Lord, then, I urge you to live a life worthy of the calling you have received. ² Be completely humble and gentle; be patient, bearing with one another in love. ³ Make every effort to keep the unity of the Spirit through the bond of peace. ⁴ There is one body and one Spirit, just as you were called to one hope when you were called; ⁵ one Lord, one faith, one baptism; ⁶ one God and Father of all, who is over all and through all and in all.

Deuteronomy 6:1

Hear, O Israel: The Lord our God, the Lord is one.

Isaiah 46:9

…remember the former things of old;
for I am God, and there is no other;
    I am God, and there is none like me…

James 2:19

You believe that God is one; you do well. Even the demons believe—and shudder!

John 1:12

But to all who did receive him, who believed in his name, he gave the right to become children of God…

Galatians 3:26

…for in Christ Jesus you are all sons of God, through faith.

Isaiah 45:5-7

I am the Lord, and there is no other,
    besides me there is no God;
    I equip you, though you do not know me,
⁶ that people may know, from the rising of the sun
    and from the west, that there is none besides me;
    I am the Lord, and there is no other.
⁷ I form light and create darkness;
    I make well-being and create calamity;
    I am the Lord, who does all these things.