Mark 12:32

And the scribe said to him, Well, teacher, you have said truly; there is one [God], and no other but him;

Mark 12:29

Jesus answered, First 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 the true One; and we are in the true One, 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
Jesus answered, First 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 the true One; and we are in the true One, in his Son Jesus Christ; this is the true God, and eternal life.