Religion has two functions: a social one (it consolidates a group of followers) and a personal one (psychological). In modern times, the social function of religion has been taken over by ideologies. Socialism is one of such ideologies. The creators of Marxism called their version of socialism scientific socialism, but their vision of the course of history (‘from capitalism to communism’) has become the foundation of a new religion and a new church. The author calls this church ‘Marxo-Leninism’. The text shows similarities between the Catholic Church and the Marxo-Leninism (or the Stalinist church), as well as the analogies between the Jesuit order and the ‘Len-Party’ (i.e. the Leninisttype party).