Mark 12:32

And the scribe said to him, Excellently well, Master! Thou hast said the truth: for He is one: and there is no other but he.

Mark 12:29

And Jesus answered him, The first of all the commandments is, Hear, O Israel; the Lord our God is one Lord.

1 John 5:20-21

But we know that the Son of God is come; and he hath given us an understanding that we may know the true one; and we are in the true one, even in his Son Jesus Christ; this is the true God and eternal life.

Treasury of Scripture Knowledge

Summary

Unto thee it was shewed, that thou mightest know that the LORD he is God; there is none else beside him.

Bible References

None else

Mark 12:29
And Jesus answered him, The first of all the commandments is, Hear, O Israel; the Lord our God is one Lord.
1 John 5:20
But we know that the Son of God is come; and he hath given us an understanding that we may know the true one; and we are in the true one, even in his Son Jesus Christ; this is the true God and eternal life.