2 John 1:1-6 KJV

The elder unto the elect lady and her children, whom I love in the truth; and not I only, but also all they that have known the truth; [2] For the truth's sake, which dwelleth in us, and shall be with us for ever. [3] Grace be with you, mercy, and peace, from God the Father, and from the Lord Jesus Christ, the Son of the Father, in truth and love. [4] I rejoiced greatly that I found of thy children walking in truth, as we have received a commandment from the Father. [5] 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.

[6] And this is love, that we walk after his commandments. This is the commandment, That, as ye have heard from the beginning, ye should walk in it.