English summary: The reform movement of pietism considered sexuality and marriage as a particular challenge regarding the emphasis it laid on the experiential nature of piety. Therefore marriage as basis of human sociability and the delicate theme of sexuality has been the subject of many assessments and theological writings. There are particularly the writings of the radical pietists in which can be found an articulated detachment from the theology of marriage of the reformation which ranges from dismissal of any kind of marriage to a sacralisation of the community of man and wife. This...