1 John 3:23

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

John 6:29

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

John 13:34

A new commandment I give 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 have heard from the beginning, that we should love one another;

Matthew 22:39

There is a second like it: "Thou shalt love thy neighbor as thyself."

Mark 9:7

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

John 14:1

Let not your heart be troubled. Have faith in God, and have faith in me.

John 17:3

And this is the everlasting life, to know thee, the only true God, and Jesus Christ whom thou didst send.

Acts 16:31

And they said, Believe in the Lord Jesus, and thou wilt be saved, and thy household.

Ephesians 5:2

and walk in love, as Christ also loved you, and gave himself for you an offering and a sacrifice to God, of a sweet odor.

1 Thessalonians 4:9

But concerning brotherly love there is no need of writing to you; for ye yourselves are taught of God to love one another;

1 Timothy 1:15

True is the saying, and worthy of all acceptance, 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 unto unfeigned brotherly love, love one another from the heart, fervently;

1 Peter 4:8

And above all things have fervent love among yourselves; for love covereth a multitude of sins.

1 John 2:8-10

Again, a new commandment I write to you, which thing is true in him, and in you; because the darkness is passing away, and the true light now shineth.

1 John 4:21

And this commandment we have from him, that he who loveth 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

Mark 9:7
And there came a cloud overshadowing them; and a voice came 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 in him whom he sent.
John 14:1
Let not your heart be troubled. Have faith in God, and have faith in me.
John 17:3
And this is the everlasting life, to know thee, the only true God, and Jesus Christ whom thou didst send.
Acts 16:31
And they said, Believe in the Lord Jesus, and thou wilt be saved, and thy household.
1 Timothy 1:15
True is the saying, and worthy of all acceptance, 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 have heard from the beginning, that we should love one another;
1 John 2:8
Again, a new commandment I write to you, which thing is true in him, and in you; because the darkness is passing away, and the true light now shineth.
1 John 4:21
And this commandment we have from him, that he who loveth God love also his brother.
Matthew 22:39
There is a second like it: "Thou shalt love thy neighbor as thyself."
John 13:34
A new commandment I give 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 loved you, and gave himself for you an offering and a sacrifice to God, of a sweet odor.
1 Thessalonians 4:9
But concerning brotherly love there is no need of writing to 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 unto unfeigned brotherly love, love one another from the heart, fervently;
1 Peter 4:8
And above all things have fervent love among yourselves; for love covereth a multitude of sins.

General references

Luke 11:28
But he said, Blessed rather 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 also ought to love one another.
1 John 5:2
By this we know that we love the children of God, when we love God, and do his commandments.