This is the story of a man who really did exist: a devout Jew by the name of Jesus of Nazareth. He spent a year working and preaching at the Sea of Galilee. Christians believe he was sent to Earth to redeem people from their sins. But much remains a mystery. The more we discover about the time in which Jesus lived, and the more evidence we find of his existence, the clearer it becomes: many things happened very differently to the way they were told by the authors of the bible.