Both Calvinist and Catholic clergy mounted fierce opposition against the group, but Socinian ministers took advantage of the atmosphere of religious tolerance, promoted by such Polish kings as Sigismund II Augustus and Stephen Báthory, to teach their ideas.
Para pengikut Calvin maupun pemimpin agama Katolik melancarkan tentangan sengit terhadap kelompok itu, tetapi para rohaniwan Sosinianisme memanfaatkan suasana toleransi beragama, yang digalang oleh raja - raja Polandia seperti Sigismund II Augustus dan Stephen Báthory, untuk mengajarkan gagasan - gagasan mereka.