The establishment of Christianity in the Setomaa region is a complex historical process rather than a single, definitive event. The population’s shift from indigenous beliefs towards the Christian faith spanned several centuries, reflecting gradual cultural and religious influences.
The eastern territories, including Setomaa, experienced contact with Orthodox Christianity originating from the East Slavic regions earlier than Western Christianity. While formalized religious structures and widespread adoption took time, early interactions through trade, political relations, and missionary activity laid the groundwork for the eventual integration of Christian beliefs and practices into the local culture. This merging of traditional customs with the new faith created a unique syncretic religious landscape.