2 John 1:7-9

1:7 For many deceivers have gone out into the world, people who do not confess Jesus as Christ coming in the flesh. This person is the deceiver and the antichrist! 1:8 Watch out, so that you do not lose the things we have worked for, but receive a full reward.

1:9 Everyone who goes on ahead and does not remain in the teaching of Christ does not have God. The one who remains in this teaching has both the Father and the Son.