1 John 2:7

Beloved, I am not writing a new commandment to you, nay, and old commandment, which you have had from the beginning. That old commandment is the message to which you have listened.

1 John 3:11

For this is the message that you have listened to from the beginning, "WE ARE TO LOVE ONE ANOTHER."

2 John 1:5-6

And now I am entreating you, Lady, not as though I were writing some new commandment to you, but one which we have had from the beginning, let us love one another.

Matthew 5:43

"You have heard that it was said, "You shall love your neighbor and hate your enemy."

Matthew 22:37-40

Jesus answered, "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

Jesus replied. "The first is. 'Hear, O Israel, the Lord our God is one Lord;

Acts 17:19

Then they laid hold of him and brought him up to Mars Hill, saying. "May we be told what this new teaching of yours is?

Romans 13:8-10

Never owe any one anything save the debt of brotherly love; for he who loves his neighbor has fulfilled the Law.

Galatians 5:13-14

For you, brothers, were called for freedom; only do not make your freedom an excuse for self-indulgence, but in love enslave yourselves to one another.

James 2:8-12

If you are keeping the royal law, which says, Thou shalt love thy neighbor as thou dost thyself, you are doing well.

1 John 2:24

If what you have heard from the beginning is abiding in you, you also will ever abide in the Son and in the Father.

1 John 3:23

His commandment is this, that we should believe in the name of his Son, Jesus Christ, and love one another as he has commanded us to do.

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 that you have listened to from the beginning, "WE ARE TO LOVE ONE ANOTHER."
Acts 17:19
Then they laid hold of him and brought him up to Mars Hill, saying. "May we be told what this new teaching of yours is?
2 John 1:5
And now I am entreating you, Lady, not as though I were writing some new commandment to you, but one which we have had from the beginning, let us love one another.

But

Matthew 5:43
"You have heard that it was said, "You shall love your neighbor and hate your enemy."
Matthew 22:37
Jesus answered, "Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind.
Mark 12:29
Jesus replied. "The first is. 'Hear, O Israel, the Lord our God is one Lord;
Romans 13:8
Never owe any one anything save the debt of brotherly love; for he who loves his neighbor has fulfilled the Law.
Galatians 5:13
For you, brothers, were called for freedom; only do not make your freedom an excuse for self-indulgence, but in love enslave yourselves to one another.
James 2:8
If you are keeping the royal law, which says, Thou shalt love thy neighbor as thou dost thyself, you are doing well.

General references

John 15:12
"This is my command, Love one another as I have loved you.