From Wikipedia:
Cult is a term, considered pejorative by some, for a relatively small group which is typically led by a charismatic and self-appointed leader, who excessively controls its members, requiring unwavering devotion to a set of acts and practices which are considered deviant (outside the norms of society).
Seems about right. Then your cult promises (always soon…) to deliver to the people something they can only have by giving the cult their unwavering support and money.