2 John 1:5-7

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

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

7 For many deceivers have entered into the world, who do not confess Jesus Christ coming in [the] flesh. This is the deceiver and the anti-christ.