Joachim Gnilka embarks on a new way to decipher not only the figure of the Apostle, but also the man Paul of Tarsus, his vocation, the method and content of his teaching. The biographical details and historical traces realize the Apostle Paul as a theological work in progress, whose main approaches are subject to careful analysis. The description of Paul's images collected in the Acts of the Apostles and the letters outlining the change deteuropaulinas already suffered an early date the image of the Apostle, and can arrive to the historical Paul.