Brigham Young was shockingly successful at getting people to leave, not only well-established communities in the Eastern USA, but Europe, to go to the howling wilderness of the Great Salt Lake.
Whatever makes a Prophet as distinct from a common-or-garden lunatic or confidence man, he had it. As with the undeniable possession by Mao of the Mandate of Heaven, how he came by it is kind of a scary question which I don't care to examine right now!
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko