'New Commandment' in the Bible

A new commandment I give to you, that ye should love each other, just as I loved you, so that ye also should love each other.

Brothers, I write no new commandment to you, but an old commandment that ye had from the beginning. The old commandment is the word that ye heard from the beginning.

Again, a new commandment I write to you, which is TRUE in him and in you, because the darkness is passing away, and the TRUE light now shines.

And now I beseech thee, lady, not as writing a new commandment to thee, but what we had from the beginning, that we would love each other.