1 John 3:23

And this is his commandment, that we believe on the name of his Son Jesus Christ, and that we love one another, even as he has given us commandment.

John 6:29

Jesus answered and said to them, This is the work of God, that ye believe on him whom he has sent.

John 13:34

A new commandment I give to you, that ye love one another; as I have loved you, that ye also love one another.

John 15:12

This is my commandment, that ye love one another, as I have loved you.

1 John 3:11

For this is the message which ye have heard from the beginning, that we should love one another:

Deuteronomy 18:15-19

Jehovah thy God will raise up unto thee a prophet from the midst of thee, of thy brethren, like unto me; unto him shall ye hearken;

Psalm 2:12

Kiss the Son, lest he be angry, and ye perish in the way, though his anger burn but a little. Blessed are all who have their trust in him.

Matthew 22:39

And the second is like it, Thou shalt love thy neighbour as thyself.

Mark 9:7

And there came a cloud overshadowing them, and there came a voice out of the cloud, This is my beloved Son: hear him.

John 14:1

Let not your heart be troubled; ye believe on God, believe also on me.

John 17:3

And this is the eternal life, that they should know thee, the only true God, and Jesus Christ whom thou hast sent.

Acts 16:31

And they said, Believe on the Lord Jesus and thou shalt be saved, thou and thy house.

Ephesians 5:2

and walk in love, even as the Christ loved us, and delivered himself up for us, an offering and sacrifice to God for a sweet-smelling savour.

1 Thessalonians 4:9

Now concerning brotherly love ye have no need that we should write to you, for ye yourselves are taught of God to love one another.

1 Timothy 1:15

Faithful is the word, and worthy of all acceptation, that Christ Jesus came into the world to save sinners, of whom I am the first.

1 Peter 1:22

Having purified your souls by obedience to the truth to unfeigned brotherly love, love one another out of a pure heart fervently;

1 Peter 4:8

but before all things having fervent love among yourselves, because love covers a multitude of sins;

1 John 2:8-10

Again, I write a new commandment to you, which thing is true in him and in you, because the darkness is passing and the true light already shines.

1 John 4:21

And this commandment have we from him, That he that loves God love also his brother.

Treasury of Scripture Knowledge

Summary

And this is his commandment, That we should believe on the name of his Son Jesus Christ, and love one another, as he gave us commandment.

Bible References

His commandment

Deuteronomy 18:15
Jehovah thy God will raise up unto thee a prophet from the midst of thee, of thy brethren, like unto me; unto him shall ye hearken;
Psalm 2:12
Kiss the Son, lest he be angry, and ye perish in the way, though his anger burn but a little. Blessed are all who have their trust in him.
Mark 9:7
And there came a cloud overshadowing them, and there came a voice out of the cloud, This is my beloved Son: hear him.
John 6:29
Jesus answered and said to them, This is the work of God, that ye believe on him whom he has sent.
John 14:1
Let not your heart be troubled; ye believe on God, believe also on me.
John 17:3
And this is the eternal life, that they should know thee, the only true God, and Jesus Christ whom thou hast sent.
Acts 16:31
And they said, Believe on the Lord Jesus and thou shalt be saved, thou and thy house.
1 Timothy 1:15
Faithful is the word, and worthy of all acceptation, that Christ Jesus came into the world to save sinners, of whom I am the first.

Love

1 John 3:11
For this is the message which ye have heard from the beginning, that we should love one another:
1 John 2:8
Again, I write a new commandment to you, which thing is true in him and in you, because the darkness is passing and the true light already shines.
1 John 4:21
And this commandment have we from him, That he that loves God love also his brother.
Matthew 22:39
And the second is like it, Thou shalt love thy neighbour as thyself.
John 13:34
A new commandment I give to you, that ye love one another; as I have loved you, that ye also love one another.
John 15:12
This is my commandment, that ye love one another, as I have loved you.
Ephesians 5:2
and walk in love, even as the Christ loved us, and delivered himself up for us, an offering and sacrifice to God for a sweet-smelling savour.
1 Thessalonians 4:9
Now concerning brotherly love ye have no need that we should write to you, for ye yourselves are taught of God to love one another.
1 Peter 1:22
Having purified your souls by obedience to the truth to unfeigned brotherly love, love one another out of a pure heart fervently;
1 Peter 4:8
but before all things having fervent love among yourselves, because love covers a multitude of sins;

General references

Leviticus 19:37
And ye shall observe all my statutes, and all mine ordinances, and do them: I am Jehovah.
Deuteronomy 30:15
See, I have set before thee this day life and good, and death and evil,
Luke 11:28
But he said, Yea rather, blessed are they who hear the word of God and keep it.
John 15:12
This is my commandment, that ye love one another, as I have loved you.
Hebrews 13:1
Let brotherly love abide.
1 John 4:11
Beloved, if God has so loved us, we also ought to love one another.
1 John 5:2
Hereby know we that we love the children of God, when we love God and keep his commandments.