A lot of more extreme Christians claim they have the elusive 'truth', even though their views are at odds with each other.
I think the most honest opinion for both believers and non believers is, 'we don't know for sure what the truth is'. We all make assumptions, mine being that if a god exists why does it hide in the closet making its existence a matter of faith? Faith is as long as a piece of string, some doctrines and dogmas being much more extreme than others, to the point of being very dangerous, like ISIS. All that can be said of the Nicholas Marks sect, with a membership of one, is it is so bonkers it is good for a giggle, and can never be taken seriously for one second.