The ancient liturgy of the Rorate Caeli Advent Mass honors the Blessed Virgin Mary through a Mass celebrated at dawn, in complete darkness, and lit only by candles, which symbolizes Christ, the Light of the World, entering into the world with Mary as the vessel.

Pope Francis greatly limited the use of the traditional Latin Mass, believing it sowed division. Traditionalist Catholics are hoping Pope Leo charts a different path. By Elisabetta Povoledo and Ruth Graham Elisabetta Povoledo reported from the Vatican.