A Discworld novel by celebrated British author Terry Pratchett. More or less a parody of the Roman Catholic Church dating from the time of the Spanish Inquisition. Tells the story of the great god Om, revered and worshipped by the entire country of Omnia, or at least he's supposed to, and his last great prophet Brutha.

Most of PTerry's Discworld novels have recurring characters, like the Wyrd Sisters or Rincewind or Death. This is one of the rare standalone books which actually occurs many centuries before the other novels even appear on the map. ("Future" Omnians have appeared in Ankh-Morpork in successive novels, so it's not entirely standalone. But none of the actual characters do.)