2 John 1:5

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

1 John 3:11

for this is the injunction which ye heard from the beginning, that we should love one another: not as Cain who was of the evil one, and slew his brother;

John 13:34-35

A new commandment I give unto you, That ye love one another; ---as I have loved you, that ye also love one another: for by this shall all men know that ye are my disciples,

John 15:12

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

Galatians 5:22

But the fruit of the Spirit is love, joy, peace, long-suffering,

Ephesians 5:2

even as Christ hath loved us, and given Himself up for us, an offering and a sacrifice to God for an odor of sweet perfume.

1 Thessalonians 4:9

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

Hebrews 13:1

Let brotherly love continue.

1 Peter 1:22-23

Having therefore purified your souls by obedience to the truth, through the Spirit, to brotherly love unfeigned, love one another with a pure heart fervently:

1 Peter 4:8

having above all things fervent love to each other; for love will cover a multitude of sins.

2 Peter 1:7

and to piety brotherly affection; and to brotherly affection charity.

1 John 2:7-8

Brethren, I write not a 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:

1 John 3:14-18

since we know that we have passed from death to life, because we love the brethren: he, that loveth not his brother, remaineth 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 hath given us a charge to do.

1 John 4:7-12

Beloved, let us love one another: for love is from God; and every one that loveth is born of God, and knoweth God.

1 John 4:20

I love God, and hateth his brother, he is a liar: for how can he, that loveth not his brother, whom he hath seen, love God whom he hath 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
Brethren, I write not a 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:
1 John 3:11
for this is the injunction which ye heard from the beginning, that we should love one another: not as Cain who was of the evil one, and slew his brother;

General references

Hebrews 13:1
Let brotherly love continue.