The paper is dedicated to the analysis of the theological justification of the gift giving formulated by Kyivan literati of the early modern period. The main source will be the Orthodoxa Confessio Fidei or Catechism, a doctrinal text by Petro Mohyla and Isaia Trofymovych- Kozlovsky, which sets out the Orthodox doctrine in a certain system. The Code was reviewed and adopted by the Church Council of Eastern Patriarchs in Iassy in May 1642. The final version of the Orthodoxa Confessio Fidei, translated into Greek, was approved by the Church Synod in Constantinople on 11 March 1643 as the general doctrine of the Orthodox Church. The main considerations set out in the Orthodoxa Confessio Fidei regarding the gifts and their relation to prayer and salvation were detailed in the prefaces to the commemoration books (pomennyk, synodyk) of Kyivan monasteries of the 17th and 18th centuries and confirmed the idea of the Church as an institution in which gifts circulate, already present in doctrine and canon law. Until then, theological justification of the gift giving by Kyivan literati has not been studied, especially the question of (un)original, which is of paramount interest given the common or different ideas about death and salvation among Orthodox, Uniates, Roman Catholics, and Protestants. In order to address these general questions, it is worth answering some specific questions, for example, about the system of arguments used; about the selection of texts that were referred to confirm the idea, etc. While the Orthodoxa Confessio Fidei sets out the ideas that defined gift giving, the prefaces to the commemoration books, based on its, provided models that established everyday practices. In addition, each monastery had to take care of its centrality and formulated a separate offer for donors.