Book excerpt: In Did Jesus Exist? historian and Bible expert Bart Ehrman confronts the question, "Did Jesus exist at all?" Ehrman vigorously defends the historical Jesus, identifies the most historically reliable sources for best understanding Jesus’ mission and message, and offers a compelling portrait of the person at the heart of the Christian tradition. Known as a master explainer with deep knowledge of the field, Bart Ehrman methodically demolishes both the scholarly and popular “mythicist” arguments against the existence of Jesus. Marshaling evidence from within the Bible and the wider historical record of the ancient world, Ehrman tackles the key issues that surround the mythologies associated with Jesus and the early Christian movement. In Did Jesus Exist?: The Historical Argument for Jesus of Nazareth, Ehrman establishes the criterion for any genuine historical investigation and provides a robust defense of the methods required to discover the Jesus of history.