Cults fascinate me, at least the ones that grow big and successful. Perhaps most are diabolic in origin. If a founder of a religious movement was involved in occult practices you'd think that'd be a rather large warning sign ('Danger, Will Robinson!'), and yet many don't care, seeing mysticism as the mark of authenticity.
That demonic forces helped in the creation of some religions makes sense because the devil can explain heterodoxy better and more pleasingly than most of us can explain orthodoxy. Same as it ever was:
Now the serpent was more subtil than any beast of the field which the LORD God had made. And he said unto the woman, Yea, hath God said, Ye shall not eat of every tree of the garden? And the woman said unto the serpent, We may eat of the fruit of the trees of the garden: But of the fruit of the tree which is in the midst of the garden, God hath said, Ye shall not eat of it, neither shall ye touch it, lest ye die.
And the serpent said unto the woman, Ye shall not surely die: For God doth know that in the day ye eat thereof, then your eyes shall be opened, and ye shall be as gods, knowing good and evil.
And when the woman saw that the tree was good for food, and that it was pleasant to the eyes, and a tree to be desired to make one wise, she took of the fruit thereof, and did eat, and gave also unto her husband with her; and he did eat. --Gen 3:1-6