1 John 3:14

3:14 We know that we have crossed over from death to life because we love our fellow Christians. The one who does not love remains in death.

1 John 4:1

Testing the Spirits

4:1 Dear friends, do not believe every spirit, but test the spirits to determine if they are from God, because many false prophets have gone out into the world.

1 John 2:19

2:19 They went out from us, but they did not really belong to us, because if they had belonged to us, they would have remained with us. But they went out from us to demonstrate that all of them do not belong to us.