In Russia, religion as a sphere of social consciousness becomes the object of linguistic research at the turn of the 20th – 21st centuries due to the well-known changes in the extralinguistic situation. Religious style complements the traditional paradigm of functional styles on the basis of the separation of the religious sphere of consciousness and the type of human activity. The definition of the language of religion is ambiguous: religious discourse, religious style, religious communication, religiolect, language of religion, etc. Within the framework of functional stylistics, the concepts of religious and preaching style, church-religious style, religious style are used as synonyms. Religious style is characterized by the constructive principle of prototextuality, based on the ontological principle of twoworldliness. In Russia, the religious style is generally characterized by multilingualism, and in Orthodoxy by bilingualism (Church Slavonic and Russian). Russian linguistics actively describes the genres of the religious sphere (sermon, epistle, prayer, akathist, hagiography, confession) and attempts are made to systematize the genres and describe the vocabulary of Orthodoxy and other confessions.