No other apostle than Paul, has been so echo in history as Simon Peter. But who was really the founding figure of Christianity?. In this book, Joachim Gnilka takes research beyond the borders of the New Testament and follow the path of Peter from Bethsaida and Capernaum to the metropolis of the Roman world, through Jerusalem, from his first encounter with Jesus until his missionary activity. At a time when renewing the efforts towards the unity of the separated churches is more necessary than ever this new reflection on Peter.