1 John 4:1-3

Revised Geneva Translation

4 Dearly beloved, do not believe every spirit. But test the spirits to see if they are of God. For many false prophets have gone out into the world.

² By this you shall know the Spirit of God: Every spirit which confesses that Jesus Christ has come in the flesh is of God.

³ And every spirit that does not confess that Jesus Christ has come in the flesh, is not of God. But this is the spirit of Antichrist, of whom you have heard; how that he would come and is now already in this world.