the heyday of sacramental development, in which definitions of sacraments were worked out with great care, the number of sacraments established, and so on. The Reformation period found its center of gravity in the doctrine of justification. In the modern period, the question of questions became the nature of God and his relation to the world. Basic decisions were thus made in the areas of creation, the being of God and his relation to the world, and revelation, which were to become foundational for