The Apostle Paul's conception of space in the emergence of the "new being" through baptism "in Christ" had an immense historical influence on diverse subsequent texts of the nascent New Testament. This approach – through phenomenological reasoning – can be a key to church room pedagogy, which has begun to be discovered in recent years, and to its interpretation in religious education and cultural studies. The volume examines the way in which the reformer Martin Luther also understood the Gospel phenomenologically in a spatial and corporeal sense and was able to use this as inspiration for church buildings and their interior design (for example at the Lord's Supper). In preparation for the commemoration of the anniversary of the Reformation in 2017, this volume is an ecumenical contribution to the debate over the sacred "in Christ".