2 John 1:5

And now I beseech you, Curia, not as if writing a new commandment to you, but [one] which we had from the beginning, that we should love one another.

1 John 3:11

For this is the message which you heard from the beginning; that we should love one another;

John 13:34-35

I give you a new commandment to love another, as I have loved you that you also should love one another.

John 15:12

This is my commandment, that you love one another as I have loved you.

Galatians 5:22

But the fruit of the Spirit is love, joy, peace, long suffering, kindness, goodness, faith,

Ephesians 5:2

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

1 Thessalonians 4:9

But concerning brotherly love, you have no need that I should write to you; for you are taught by God to love one another;

Hebrews 13:1

Let brotherly love continue.

1 Peter 1:22-23

Having purified your souls by obeying the truth to unfeigned brotherly love, love one another fervently, from the heart,

1 Peter 4:8

above all things have fervent love one for another, for love hides a multitude of sins.

2 Peter 1:7

and to piety brotherly kindness, and to brotherly kindness love.

1 John 2:7-8

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

1 John 3:14-18

We know that we have passed from death to life, because we love the brothers; he that loves not, continues in death.

1 John 3:23

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

1 John 4:7-12

Beloved, let us love one another, for love is of God, and every one that loves has been born of God and knows God.

1 John 4:20

If any one says, I love God, and hates his brother, he is a liar; for he that loves not his brother whom he has seen, how can he love God whom he has not seen?

Treasury of Scripture Knowledge

Summary

And now I beseech thee, lady, not as though I wrote a new commandment unto thee, but that which we had from the beginning, that we love one another.

General references

Bible References

Not

1 John 2:7
Beloved, I write not a new commandment to you, but an old commandment, which you had from the beginning; the old commandment is the word which you heard.
1 John 3:11
For this is the message which you heard from the beginning; that we should love one another;

General references

Hebrews 13:1
Let brotherly love continue.