For centuries at Christmas, Christians have set up devotional crèches, three-dimensional Nativity scenes that they normally display in their homes, churches, and stores until Jan. 6. That day, Epiphany, is celebrated as the time when the divinity of Jesus was revealed to the Magi, or wise men. These three wise men were the first Gentiles (non-Jews) to meet him.
St. Francis of Assisi (circa 1182–1226) popularized the crèche tradition, which experts believe originated much earlier.