The Scriptures of the Christian Church tell us that the birth of the baby in the manger at Bethlehem came at the end of one era, and the beginning of another. In Luke's Gospel, the Angel Gabriel visits first not Mary, nor Joseph, but one Zechariah, a priest of the temple of Yahweh, and his wife, Elizabeth, a descendant of Aaron. Aaron the brother of Moses and the first of the Priests of the people who fled slavery in Egypt.