On Christmas Eve, as the Christian world prepares to celebrate the 2000th birthday of Jesus of Nazareth, this episode takes a final tour through some of the greatest works of Christian art. Seeing Salvation Part 4 "The Promise" - looks at the historical variations in the images of Christ after his crucifixion, death, and resurrection, with its implications for Christian societies over the ages. Neil MacGregor looks beyond the death of Jesus towards images of resurrection and redemption, and the glorious visions of the Second Coming. In the story of Christs triumph over death, artists have found an eloquent language of hope and promise which continues to inspire humanity 2000 years on.