Hello, I am very casual fan of Warhammer 40k. Thus, many of the finer details elude me. Especially since the lore is so dense.
My main question is, what is considered Heresy or at least worthy of serious punishment. Especially in the eyes of the Ordo Hereticus and or the Sisters of Battle.
Its confusing because the words heresy, heretics. blasphemy, purge, etc are all thrown around so casually in text, without even a single mention or definition of what actually constitutes such a crime(s). Being an alien seems to be one (learned that from the video games, heh), but other than that, no idea.
Also, can sex to a certain point, be considered heretical or at least worthy of punishment? I know of Slaanesh and his abuses, but can anything sexual become heretical without needing direct association with Slaanesh? This includes, any sexual orientation other than heterosexual.
Thanks in advance to anyone who takes the time to answer.