John 17:3
And this is the everlasting life, to know thee, the only true God, and Jesus Christ whom thou didst send.
Mark 12:29-32
Jesus answered, The first is, "Hear, O Israel, the Lord our God is one Lord;
1 Timothy 2:5
For there is one God, and one mediator between God and men, the man Christ Jesus,
John 10:30
I and the Father are one.
1 Corinthians 8:4-6
Concerning the eating of the things offered in sacrifice to idols, then, we know that an idol is nothing in the world, and that there is no other God but one.
Treasury of Scripture Knowledge
Bible References
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James 2:19
Thou believest that God is one; thou doest well; the demons also believe, and tremble.