1 John 4:1-3 Holman Christian Standard Bible (HCSB)
The Spirit of Truth and the Spirit of Error
4 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.
2 This is how you know the Spirit of God: Every spirit who confesses that Jesus Christ has[a] come in the flesh is from God. 3 But every spirit who does not confess Jesus[b] is not from God. This is the spirit of the antichrist; you have heard that he is coming, and he is already in the world now.