Our Gospel Reading permits us to begin our contemplation of the mystery of the Incarnation we celebrate at Christmas: “Now this is how the birth of Jesus Christ came about”. In the preceding verses of the first chapter of Matthew's Gospel, the Evangelist has listed the genealogy of Jesus, tracing his lineage through King David to Abraham. In the chapter to follow, Matthew tells of the visit from the Magi, and Herod's massacre of the infants in Bethlehem. We must not gloss over too quickly the difficult circumstances described in today's Gospel. The way that Joseph and Mary face these circumstances tells us much about these holy people and their faith in God. Joseph and Mary are betrothed to be married. This is sometimes described as an engagement period, but it is more than that. Betrothal in first century Jewish culture was in fact the first part of the marriage contract. A breach of this contract was considered adultery. Mary is found to be with child. If adultery is proven, the punishment might be death. Joseph has rights under Mosaic law but chooses to act discreetly in his plans to break the marriage contract, so as to protect Mary. Then God intervenes. The message of the angel of the Lord given to Joseph in his dream tells us much about the child that Mary bears and his role in God's plan. He is conceived by the Holy Spirit. His name will be Jesus, which in the Hebrew means “Yahweh saves.” He will be the fulfilment of the prophecy heard in today's first reading from Isaiah: “. . . The virgin shall be with child . . . and shall name him Emmanuel.” Joseph does as the angel of the Lord directs. He takes Mary to be his wife and accepts the child in her womb as his own. Joseph and Mary are both cooperative with God's plan. They are both models for us of what it means to be faithful servants of God.