Baptists and Lutherans often define the tension of being in the world, but not in terms of two separate realms: the kingdom of God and the kingdom of the world. However, their understanding of these realms and their delicate connection is quite nuanced. Within the Lutheran tradition, the two kingdoms are held in tension, which in turn leads to a precarious interaction of state and church. In the (Ana)Baptist tradition, a much stricter duality is emphasised,...