The article is theoretically methodological and analytically empirical in nature. The theoretical section deals with the status of proper names in various types of discourse and in variations of style in Polish. It proposes combining onomastics with various branches of contemporary analysis of discourse, general linguistics, stylistics, and theories of text and literature. The author considers means of analyzing proper names on lexical, grammatical, textual, semantic-pragmatic, and functional levels. The empirical section is a corroboration of the methodological determinations. The author examines in what way proper names are used in pastoral letters of the episcopate of Poland (1945-1966), which are linguistic designations of specific objects and persons existing in Polish reality (such as: Warszawa, Jasna Gora, Polska, sw. Stanislaw, Henryk Sienkiewicz), and reveals various fragments of the accompanying extralinguistic context (historical and political). Analysis shows that proper names in the pastoral letters are an important element of their rhetoric, linguistic material constructing metaphors such as 'the history of Poland is the life of the people' or 'Poland is a child (a daughter)'. They also serve various stylizational practices (e.g., romantic, Biblical), and thereby the expression of philosophical, historico-physical, ethical, and social content (e.g., the idea of Messianism). Geographical names demarcate a symbolic 'cartography' of Poland, Europe, and the world. Personal names create a category of time, especially of the nation's past and future. Onyms are also sure designations of values and concepts, primarily of a Polonocentric Catholicism, which in turn is an element of dialog with Marxist ideological orientation.