Complex sentence: Although Satan is generally viewed as having negative characteristics, some groups have very different beliefs, in Theistic Satanism, Satan is considered a positive force and deity who is either worshipped or revered.
Split into simpler sentences: Although Satan is generally viewed as having negative characteristics, some groups have beliefs much unlike the main views. In Theistic Satanism, Satan is considered a positive force and deity who is either worshipped or revered.