Since Albert Schweitzer''s monumental work, nearly a century ago, psychology has been banned from Historical Jesus research. But both disciplines have advanced and it is time to review the contribution that psychology can make. Bas Van Os examines the problems which surround both the historical and the psychological study of Jesus, such as the fact that we can only work with the surviving traditions that some of his early followers left us. Following this, Van Os proposes a theoretical framework that combines sound psychological theories and critical biblical scholarship to explain how Jesus'' life and religious experience impacted the beliefs of his friends and family after his death.