2 John 1:5-7

5And now I plead with you, lady, not as though I wrote a new commandment to you, but that which we have had from the beginning: that we love one another.

6This is love, that we walk according to His commandments. This is the commandment, that as you have heard from the beginning, you should walk in it.

7For many deceivers have gone out into the world who do not confess Jesus Christ as coming in the flesh. This is a deceiver and an antichrist.