1 John 3:23

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.

John 6:29

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

John 13:34

A new commandment I give unto 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 that ye heard from the beginning, that we should love one another.

Deuteronomy 18:15-19

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

Psalm 2:12

Kiss the Son, lest he be angry, and ye perish from the way, when his wrath is kindled but a little. Blessed are all they that put their trust in him.

Matthew 22:39

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

Mark 9:7

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

John 14:1

Let not your heart be troubled: ye believe in God, believe also in me.

John 17:3

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

Acts 16:31

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

Ephesians 5:2

And walk in love, as Christ also hath loved us, and hath given himself for us an offering and a sacrifice to God for a sweetsmelling savour.

1 Thessalonians 4:9

But as touching brotherly love ye need not that I write unto you: for ye yourselves are taught of God to love one another.

1 Timothy 1:15

This is a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners; of whom I am chief.

1 Peter 1:22

Seeing ye have purified your souls in obeying the truth through the Spirit unto unfeigned love of the brethren, see that ye love one another with a pure heart fervently:

1 Peter 4:8

And above all things have fervent charity among yourselves: for charity shall cover the multitude of sins.

1 John 2:8-10

Again, a new commandment I write unto you, which thing is true in him and in you: because the darkness is past, and the true light now shineth.

1 John 4:21

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

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
The LORD thy God will raise up unto thee a Prophet from the midst of thee, of thy brethren, like unto me; unto him ye shall hearken;
Psalm 2:12
Kiss the Son, lest he be angry, and ye perish from the way, when his wrath is kindled but a little. Blessed are all they that put their trust in him.
Mark 9:7
And there was a cloud that overshadowed them: and a voice came out of the cloud, saying, This is my beloved Son: hear him.
John 6:29
Jesus answered and said unto them, This is the work of God, that ye believe on him whom he hath sent.
John 14:1
Let not your heart be troubled: ye believe in God, believe also in me.
John 17:3
And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent.
Acts 16:31
And they said, Believe on the Lord Jesus Christ, and thou shalt be saved, and thy house.
1 Timothy 1:15
This is a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners; of whom I am chief.

Love

1 John 3:11
For this is the message that ye heard from the beginning, that we should love one another.
1 John 2:8
Again, a new commandment I write unto you, which thing is true in him and in you: because the darkness is past, and the true light now shineth.
1 John 4:21
And this commandment have we from him, That he who loveth God love his brother also.
Matthew 22:39
And the second is like unto it, Thou shalt love thy neighbour as thyself.
John 13:34
A new commandment I give unto 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, as Christ also hath loved us, and hath given himself for us an offering and a sacrifice to God for a sweetsmelling savour.
1 Thessalonians 4:9
But as touching brotherly love ye need not that I write unto you: for ye yourselves are taught of God to love one another.
1 Peter 1:22
Seeing ye have purified your souls in obeying the truth through the Spirit unto unfeigned love of the brethren, see that ye love one another with a pure heart fervently:
1 Peter 4:8
And above all things have fervent charity among yourselves: for charity shall cover the multitude of sins.

General references

Leviticus 19:37
Therefore shall ye observe all my statutes, and all my judgments, and do them: I am the LORD.
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 that 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 continue.
1 John 4:11
Beloved, if God so loved us, we ought also to love one another.
1 John 5:2
By this we know that we love the children of God, when we love God, and keep his commandments.

King James Version Public Domain