Mark 12:32

So the Scribe said to Him, "Rightly, in very truth, Rabbi, have you said that He stands alone, and there is none but He;

Mark 12:29

"The chief Commandment," replied Jesus, "is this: 'Hear, O 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 so that we know the true One, and are in union with the true One--that is, we are in union with His Son Jesus Christ. He is the true God and the Life of the Ages.

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
"The chief Commandment," replied Jesus, "is this: 'Hear, O 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 so that we know the true One, and are in union with the true One--that is, we are in union with His Son Jesus Christ. He is the true God and the Life of the Ages.