Mark 12:32

And the scribe said to him: Teacher, in truth you have well said, that there is one God, and there is no other beside him;

Mark 12:29

And Jesus answered him: The first commandment of all is, Hear, Israel, the Lord our God is one Lord.

1 John 5:20-21

And we know that the Son of God has come, and has given us understanding, that we may know him that is true: and we are in him that is true, in his Son Jesus Christ. This is the true God, and life eternal. Little children, keep yourselves from idols.

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 commandment of all is, Hear, Israel, the Lord our God is one Lord.
1 John 5:20
And we know that the Son of God has come, and has given us understanding, that we may know him that is true: and we are in him that is true, in his Son Jesus Christ. This is the true God, and life eternal. Little children, keep yourselves from idols.