Mark 12:32

the Scribe replied, what you have said, master, is very true, there is one God, and no other but he.

Mark 12:29

Jesus answer'd him, the first of all the commandments is thus deliver'd, "hear, o Israel, the lord our God is the only lord.

1 John 5:20-21

We know that the son of God is come, and hath given us an understanding to know him that is true: and we are with him that is true, by his son Jesus Christ. "he is the true God, who is the author of 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
Jesus answer'd him, the first of all the commandments is thus deliver'd, "hear, o Israel, the lord our God is the only lord.
1 John 5:20
We know that the son of God is come, and hath given us an understanding to know him that is true: and we are with him that is true, by his son Jesus Christ. "he is the true God, who is the author of eternal life."