This article is devoted to the description of genre system of religious style. The basis of the proposed classification of genres advanced by the author is the constructive principle of pretextuality reflecting such extralinguistic factors forming the style as religious consciousness and religious activities. The principle of pretextuality ensures succession preservation of religious concepts. The prototext in Christianity is the Gospel, which contains the genre samples, canonized invariant genre models which are offered to call protogenres. The fundamental basis of the modern genre system is the triad of protogenres (prayer, sermon, life). In the modern genre system every protogenre is a meaningful and structural basis of the group's derivative genres - modern genre types. Each genre type is divided into genres and subgenres according to generic-specific basis. The genre type of modern functional religious style can be presented as the conceptual field. The genres used in the liturgical sphere are the center of each genre subsystem, they are closest to a protogenre in the formal and substantial relation. The periphery of a genre subsystem is made by the genres functioning in non- liturgical sphere, they differ in some author's freedom and at the same time retain the connection with the canonical prototext. Genre subsystems, genetically ascending to protogenres of a prayer, sermons, and lives, have a common communicative frame (the subjects of religious communication belong to different worlds; the communication is characterized by a reverential tone toward God and other members of the sacred world), but differ in the direction of communication and method of processing textual content.