2 John 1:5-8

I am writing to remind you, dear friends, that we should love one another. This is not a new commandment, but one we have had from the beginning. Love means doing what God has commanded us, and he has commanded us to love one another, just as you heard from the beginning. I say this because many deceivers have gone out into the world. They deny that Jesus Christ came in a real body. Such a person is a deceiver and an antichrist. Watch out that you do not lose what we have worked so hard to achieve. Be diligent so that you receive your full reward.