1 John 2:7

Beloved, I write not a new commandment to you, but the old commandment, which ye have had from the beginning; the old commandment is the word which ye have heard from the beginning.

1 John 3:11

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

2 John 1:5-6

And now I beseech thee, Kuria, (not as writing a new commandment to thee, but that which we had from the beginning) that we may love one another.

Matthew 5:43

Ye have heard, that it hath been said, Thou shalt love thy neighbour, and hate thine enemy.

Matthew 22:37-40

Jesus said to him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind.

Mark 12:29-34

And Jesus answered him, The first of all the commandments is, Hear, O Israel; the Lord our God is one Lord.

Acts 17:19

And they took him and brought him to the Areopagus, saying, May we know what this new doctrine is, which is spoken by thee?

Romans 13:8-10

Owe no man any thing, but to love another; for he that loveth another, hath fulfilled the law.

Galatians 5:13-14

Brethren, ye have been called to liberty: only use not liberty for an occasion to the flesh, but by love serve one another.

James 2:8-12

If ye fulfil the royal law (according to the Scripture) Thou shalt love thy neighbour as thyself, ye do well.

1 John 2:24

Therefore let that abide in you which ye heard from the beginning: if that which ye heard from the beginning abide in you, ye also shall abide in the Son and in the Father.

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.

Treasury of Scripture Knowledge

Summary

Brethren, I write no new commandment unto you, but an old commandment which ye had from the beginning. The old commandment is the word which ye have heard from the beginning.

General references

Bible References

I write

1 John 3:11
For this is the message which ye heard from the beginning, that we love one another.
Acts 17:19
And they took him and brought him to the Areopagus, saying, May we know what this new doctrine is, which is spoken by thee?
2 John 1:5
And now I beseech thee, Kuria, (not as writing a new commandment to thee, but that which we had from the beginning) that we may love one another.

But

Matthew 5:43
Ye have heard, that it hath been said, Thou shalt love thy neighbour, and hate thine enemy.
Matthew 22:37
Jesus said to him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind.
Mark 12:29
And Jesus answered him, The first of all the commandments is, Hear, O Israel; the Lord our God is one Lord.
Romans 13:8
Owe no man any thing, but to love another; for he that loveth another, hath fulfilled the law.
Galatians 5:13
Brethren, ye have been called to liberty: only use not liberty for an occasion to the flesh, but by love serve one another.
James 2:8
If ye fulfil the royal law (according to the Scripture) Thou shalt love thy neighbour as thyself, ye do well.

General references

John 15:12
This is my commandment, that ye love one another, as I have loved you.