Although Roman persecution of Christians was sporadic and localised for much of the first three centuries of the church's existence, it is argued here that such persecution was nevertheless crucial in the creation and shaping of a distinct Christian identity. The primary deviance of the radical Jewish sect that had surrounded Jesus himself created a “sticky reputation” that endured even when the church had become largely politically and socially conservative. Periodic outbreaks of violence towards those labelled Christians by the authorities created a transactional relationship, in which the victims and their co‐religionists responded by the explicit adoption of a deviant identity and experienced the corollary reconstruction of the self in terms of attitudes, mores and affiliations (secondary deviance). This transaction halted a drift towards religious syncretism that might otherwise have seen Jesus take his place within the henotheistic Roman Pantheon, and thus ensured the survival of the Christian faith as monotheistic and oppositional to Roman religio.