Mediatization and digitalization are trends that are increasingly affecting religious communities and their communicative practices. While many aspects of these developments have been described theoretically and empirically, little is known about the dynamic interplay between digital media use, an individual’s religious meaning system, and the relationships within a religious community. Building on the theory of the mediatization of religion, the functionalist perspective of religion, media selection, and co-orientation research, we propose a dynamic model of digital media use in religious communities. Hereby, the religious functions of meaning-making and social connection are considered important drivers for how individuals engage with others. Additionally, theories on media selection help our understanding of the acceptance and domestication of new technologies, as well as selective exposure to specific content. In combination, the model links the individuals with the social context of their religious communities and vice versa. Furthermore, the theoretical model helps to combine and systematize empirical research from different disciplines that are relevant to understanding today’s digital religious media use. We therefore conclude with a discussion of the benefits of the model for future theoretical developments and empirical research in the field of digital religion and beyond.