Every religion is characterised by a common belief among its followers. This belief requires a certain commitment in order to be able to create common ground and thus community, and said commitment is created by beliefs that often have a normative character. Such identity-creating beliefs were shaped and formed not least in the confrontation with other denominations and/or religions. The encounter with the religious or confessional other thus generates normative processes of reassurance of one's own convictions and practices as well as the negotiation of claims to recognition resulting from the encounter. Such processes of readjustment were and are triggered in particular by encounters with the foreign, which in turn are promoted by mobility and migration. The contributions in this volume explore these normative processes from the internal perspective of religious communities, from the perspective of interreligious encounters and from the perspective of the state's religious constitutional order.