They have gone out from our own number, but they did not really belong to us; for if they had, they would have stayed with us. It was to show that none of those who went out really belonged to us.

Dearly beloved, stop believing every so-called spiritual utterance, but keep testing them to see whether they come from God, because many false prophets have gone out into the world.

They are children of the world; this is why they speak what the world inspires, and why the world listens to them.