John proclaimed a Jesus that was real. This is the spirit of the antichrist, which you have heard is coming and even now is already in the world. The Word became flesh and made his dwelling among us. We have seen his glory, the glory of the One and Only, who came from the Father, full of grace and truth. John says spirits are tested by the viewpoints they teach.
False prophets are from the world and they teach the world's viewpoint.
They are from the world and therefore speak from the viewpoint of the world, and the world listens to them. All of these attitudes are antichrist attitudes. We must believe in the Jesus of scripture or we do not believe in Jesus at all. We must test what we believe with a few simple questions. The spirit of this world guides the false prophets to teach a worldly wisdom.