Carr's books often discuss a Luciferian conspiracy by what he called the "World Revolutionary Movement," but he later attributed the conspiracy more specifically to the "Synagogue of Satan." The term was not a reference to Judaism, Carr wrote: "I wish to make it clearly and emphatically known that I do not believe the Synagogue of Satan (S.O.S.) is Jewish, but, as Christ told us for a definite purpose, it is 'I know the blasphemy of them which say they are Jews, and are not, but are the synagogue of Satan.' (Rev. 2:9 and 3:9)"