The primary historical evidence we have about Jesus Christ comes from the four gospels in the New Testament. In these works we are presented with a coherent and consistent picture of Jesus of Nazareth as the Son of God. How do we know they are reliable? How do we know what they portray about Jesus is accurate? The answers to these questions are centered in the authors of the four gospels. If the authors were Matthew, Mark, Luke, and John, then they were eyewitnesses of Jesus or those who had access to eyewitnesses. This would give the gospels, their biographies of Jesus, strong credibility and reliability. This book presents the evidence for their authorship.