1 John 3:23

And this is his commandment, that we believe on the name of his son Jesus Christ, and love one another, as he gave 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 give I unto you: that ye love together: as I have loved you, that even so ye love one another.

John 15:12

This is my commandment: that ye love together as I have loved you.

1 John 3:11

For this is the tidings, that ye heard at the beginning, that we should love one another:

Deuteronomy 18:15-19

The LORD thy God will stir up a Prophet among you: even of thy brethren, like unto me, and unto him ye shall hearken

Psalm 2:12

Kiss the Son, lest he be angry, and so ye perish from the right way. For his wrath shall be kindled shortly: blessed are all they that put their trust in him.

Matthew 22:39

And there is another like unto this: 'Thou shalt love thine neighbor as thyself.'

Mark 9:7

And there was a cloud that shadowed them. And a voice came out of the cloud saying, "This is my dear son, hear him."

John 14:1

And he said unto his disciples, "Let not your hearts be troubled: believe in God, and believe in me.

John 17:3

This is life eternal: that they might know thee, that only very God, and whom thou hast sent, Jesus Christ.

Acts 16:31

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

Ephesians 5:2

and walk in love even as Christ loved us, and gave himself for us, an offering and a sacrifice of a sweet savour to God.

1 Thessalonians 4:9

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

1 Timothy 1:15

This is a true saying, and by all means worthy to be received, that Christ Jesus came into the world to save sinners, of whom I am chief:

1 Peter 1:22

And forasmuch as ye have purified your souls through the spirit, in obeying the truth for to love brotherly without feigning, see that ye love one another with a pure heart, fervently:

1 Peter 4:8

But above all things, have fervent love among you. For love covereth the multitude of sins.

1 John 2:8-10

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

1 John 4:21

And this commandment have we of him: that he which loveth God, should 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 stir up a Prophet among you: even of thy brethren, like unto me, and unto him ye shall hearken
Psalm 2:12
Kiss the Son, lest he be angry, and so ye perish from the right way. For his wrath shall be kindled shortly: blessed are all they that put their trust in him.
Mark 9:7
And there was a cloud that shadowed them. And a voice came out of the cloud saying, "This is my dear 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
And he said unto his disciples, "Let not your hearts be troubled: believe in God, and believe in me.
John 17:3
This is life eternal: that they might know thee, that only very God, and whom thou hast sent, Jesus Christ.
Acts 16:31
And they said, "Believe on the Lord Jesus, and thou shalt be saved and thy household."
1 Timothy 1:15
This is a true saying, and by all means worthy to be received, that Christ Jesus came into the world to save sinners, of whom I am chief:

Love

1 John 3:11
For this is the tidings, that ye heard at the beginning, that we should love one another:
1 John 2:8
Again, a new commandment I write unto you, a thing which is true in him, and also in you: for the darkness is past, and the true light now shineth.
1 John 4:21
And this commandment have we of him: that he which loveth God, should love his brother also.
Matthew 22:39
And there is another like unto this: 'Thou shalt love thine neighbor as thyself.'
John 13:34
A new commandment give I unto you: that ye love together: as I have loved you, that even so ye love one another.
John 15:12
This is my commandment: that ye love together as I have loved you.
Ephesians 5:2
and walk in love even as Christ loved us, and gave himself for us, an offering and a sacrifice of a sweet savour to God.
1 Thessalonians 4:9
But as touching brotherly love, ye need not that I write unto you. For ye are taught of God to love one another.
1 Peter 1:22
And forasmuch as ye have purified your souls through the spirit, in obeying the truth for to love brotherly without feigning, see that ye love one another with a pure heart, fervently:
1 Peter 4:8
But above all things, have fervent love among you. For love covereth the multitude of sins.

General references

Leviticus 19:37
that ye should observe all mine ordinances and judgments and that ye should keep them: I am the LORD.'"
Deuteronomy 30:15
Behold, I have set before you this day life and good, death and evil:
Luke 11:28
But he said, "Yea, happy are they that hear the word of God, and keep it."
John 15:12
This is my commandment: that ye love together as I have loved you.
Hebrews 13:1
Let brotherly love continue.
1 John 4:11
Dearly beloved, if God so loved us, then we ought also to love one another.
1 John 5:2
In this we know that we love the sons of God, when we love God, and keep his commandments.