'New Commandment' in the Bible

A new commandment I give to you, that ye love one another; even as I loved you, that ye love one another.

Beloved, I write no new commandment to you, but and old commandment which ye had from the beginning. The old commandment is the word which ye heard.

Again, a new commandment I write to you, which thing is true in Him and in you; because the darkness is passing away, and the true light is already shining.

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