Owe nothing to any man: but to love one another. For he that loveth another, fulfilleth the law. For these commandments: Thou shalt not commit adultery, thou shalt not kill, thou shalt not steal, thou shalt not bear false witness, thou shalt not desire, and so forth: if there be any other commandment, they are all comprehended in this saying, "Love thine neighbor as thyself." Love hurteth not his neighbor: Therefore is love the fulfilling of the law.

With you be grace, mercy, and peace from God the father, and from the Lord Jesus Christ, the son of the father, in truth and love. I rejoiced greatly, that I found of thy children walking in truth, as we have received a commandment of the father. And now beseech I thee, lady, not as though I wrote a new commandment unto thee, but that same, which we had from the beginning: that we should love one another. read more.
And this is the love, that we should walk after his commandments. This commandment is, that as ye have heard from the beginning, ye should walk in it.