1 John 4:2 in the King James Version
Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God:
Context
1 Beloved, don’t believe every spirit, but test the spirits, whether they are of God, because many false prophets have gone out into the world.
2 By this you know the Spirit of God: every spirit who confesses that Jesus Christ has come in the flesh is of God,
3 and every spirit who doesn’t confess that Jesus Christ has come in the flesh is not of God; and this is the spirit of the Antichrist, of whom you have heard that it comes. Now it is in the world already.