1 John 4:1-3

21st Century King James Version

4 Beloved, believe not every spirit, but test the spirits whether they are of God, because many false prophets have gone out into the world.

² Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh, is of God.

³ And every spirit that confesseth not that Jesus Christ is come in the flesh, is not of God; and such is the spirit of Antichrist, whereof ye have heard that it should come, and even now already it is in the world.