1 Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are 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 this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world.
Ironically the Final Authority section omits the Bible!
But then again, "trinity" is un-Biblical, can't be found there, and is a demonic inspired doctrine spread by men that denies that Christ came in the flesh.