In this book the author confronts the critical comments written on his works published in the anthology entitled “New Testament Border Crossings.” Theißen outlines his previous works in a summary of his thoughts, discussing his “Theory of Early Christian Religion,” research on Jesus, the social history of Early Christianity, the literary history of the New Testament, the psychology of religion, and practical theology. He also introduces a project of an evolutionary interpretation of Christianity. This volume offers a broad and exemplary insight into modern New Testament exegesis.