This essay describes a problem, that German protestant theology has faced for nearly a hundred years. The problem derives from a theory of death, which spread among theologians in the first decades of the 20th century. In contradiction to traditional doctrine they interpreted death not as the moment, when the immortal soul seperates from the body, but as the moment in time, when human life comes to its absolute end. That means, they denied the idea of an immortal soul. Accordingly (...) they interpreted the resurrection of the dead as a radically new creation. This theory, named Ganztodtheorie, caused an unsolvable problem, that can be described as follows: How can one be sure, that it is exactely he, who becomes resurrected and not a newly created double? Christian Henning discusses the answers to this question, that had been given by Carl Stange, Paul Althaus, Werner Elert, Karl Barth, Eberhard Jüngel and Wolfhard Pannenberg and finally presents his own solution. In doing so he modifies the traditional idea of the immortality of the soul. (shrink)