The basic decisions which were taken in the time of the early Christianity determine the history of the church up to the presence. Duty of this book is it, in narrative technique, and academically to explain the history of this early Christianity of the announcement of Jesus answers up to closing the Platonic academy in the year 529. The influence of the antique philosophy, the mystery cults and the Roman state in its historical development is described and the characters are shown in their specifics and their main focuses.