The simple and enduring faith of Christians has proven unconquerable despite the persecutions from ancient Rome to modern-day Iraq. Every Christmas, Christians celebrate the birth of Jesus Christ, an event recorded in the Gospels of Matthew and Luke. Jesus was born in a stable, the Gospel writers tell us, because there was no room in the inn, and He later suffered the ignominious death of being crucified between two thieves. During the 33 years in-between, He never possessed wealth, at least not in the material sense. He never commanded armies or ruled over countries. His kingdom, He said, was not...