By Sarah Arnold There are a number of categories for heresies.  Major heresies are those which change the essence of Christian doctrine substantially enough to effect salvation; minor heresies are deviations from understood Christian doctrine without necessarily corrupting the faith enough to effect salvation on their own (although they are still mostly false teaching—some heresies listed here have been condemned by the Roman Catholic Church, but are not considered heretical outside of the RCC, like Heliocentrism). For the purposes of my own research and subsequent posts, I’ve categorized heresies in the following manner. Major: Antitrinitarian (heresies that deny the Trinity in form or substance) Arian (heresies that deny the divinity…