The so-called “Group of Saints” (Heilige) formed in Mazury, in the County of Neidenburg (Kreis Neidenburg), in the late 18th c. and was most active in the parishes of Jerutki (Jerutten), Rozogi (Friedrichshof), and Wielbark (Willenberg). The present article, based on the documents stored in Secret State Archives Prussian Cultural Heritage Foundation in Berlin-Dahlem, discusses its activities. In particular, an effort is made to present the reconstructions of the essential policies and postulates of the activity of the group members. The author tries to answer the question about the period of time that the activities of surinkimininkai (Gemeinschaftsbewegung; participants of prayer hours held in private homes by lay preachers) in the Land of Mazury started. The official secession from Church was the principal reason which made the author support the previous researchers of the phenomenon of the “Saints” who attributed the “Saints” to non-traditional religious groups. On the other hand, because of the pietist roots and the majority of their views, they can be considered to be direct predecessors of surinkimininkai.