So obviously different sects or denominations have different interpretations and apply different emphasis to various teachings of the bible, but I'm wondering if there is a word to describe when a person or sect has a certain belief that is unique from other versions of Christianity. For instance, if someone believes that Jesus visited the Americas (Mormonism), or that he did not die in crucifixion and went on to have a family, or even something extremely trivial and specific like, for instance, (I'm just making this up off the top of my head) Jesus was a born as a breached birth.
How could you say, "The Breachers (again, I'm making this up and am not trying to be disrespectful) have a _________ where they believe Jesus was born as a breached birth." Is there a word that could fill that blank that would mean "a unique or controversial interpretation of a specific aspect of Christianity"?