I had a brother in law who thought he was God and his kid was the Second Coming.
Despite sharing the main thrust of this idea with Jesus Christ, it was generally agreed that my brother in law was mad (schizophrenic, actually). Why? Because his view of the world was so DIFFERENT to everybody else’s. YOU see that pink elephant? See, that one there, the one flying up above your head pulling a banner saying Vote for Mitt Romney with sparkly elephant poop coming out his…oh well never MIND!!!
How do we tell what’s true? The only way I know, is by practical road testing. Lies and untruths, of whatever respectability or persuasiveness, have a habit of hitting you in the face like a brick wall, eventually. If it aint true, you’ll find out.