This week's church is among the oldest in Christendom, because it rests atop the grotto that has been revered since the first century by Christians as the birthplace of Jesus. It's the Church of the Nativity, in Bethlehem.
In 326, Constantine and his mother St. Helena commisioned a church to be built over the cave where Jesus was born. This first church, dedicated on May 31, 339, had an octagonal floor plan and was placed directly above the cave. In the center, a 4-meter-wide hole surrounded by a railing provided a view of the cave. Portions of the floor mosaic survive from this period. St. Jerome lived and worked in Bethlehem from 384 AD, and he was buried in a cave beneath the Church of the Nativity.
The Constantinian church was destroyed by Justinian in 530 AD, who built the much larger church that remains today. In 1852, shared custody of the church was granted to the Roman Catholic, Armenian, and Greek Orthodox churches. The Greeks care for the Grotto of the Nativity, pictured below, where a silver star marks the birthplace of Jesus.
Below, my kids, Aubrey and Aaron, prepare to enter the church (behind their cousin, Elissa) through the Door of Humility, a small rectangular entrance to the church which was created in Ottoman times to prevent carts being driven in by looters, and to force even the most important visitor to dismount from his horse as he entered the holy place. The doorway was reduced from an earlier Crusader doorway, the pointed arch of which can still be seen above the current door. The outline of the Justinian square entrance can also be seen above the door.