Legominism
"My dear and beloved Grandfather, tell me, please what does the word Legominism mean?" Hassein asked.
"This word Legominism," replied Beelzebub, "is given to one of the means existing there of transmitting from generation to generation information about certain events of long-past ages, through just those three-centered beings who are thought worthy to be and who are called initiates."
from Beelzebub's Tales to his Grandson, p.349