In the Name of the Father and of the Son and of the Holy Spirit. Amen.
“Now the birth of Jesus Christ took place in this way.” The beginning of our Gospel lesson sounds so clinical, so matter-of-fact; and compared to the Gospel of Luke, Matthew does not say much about Christmas. What Luke takes over a hundred verses to talk about, Matthew boils down to the eight we have before us. But what Matthew has to say is quite a bit.
Mary and Joseph are betrothed to one another: unlike today where the vows take place the same day of the wedding, they have already promised their lifelong commitment before God and man, but their wedding day still lies in the future. They have pledged their faithfulness to one another—and now Mary is found to be with child. Such scandals are not unknown in the history of mankind, but Mary's explanation might be a first: she says the Child is from the Holy Spirit. Uh huh, replies the world; of course He is.
Given the evidence before him, Joseph could have Mary stoned to death; but he resolves instead to divorce her quietly. But as he considers these things, an angel of the Lord appears to him in a dream and says, “Joseph, son of David, do not fear to take Mary as your wife, for that which is conceived in her is from the Holy Spirit. She will bear a son, and you shall call His name Jesus, for He will save His people from their sins.”
So begins the Incarnation, and note Joseph's position from the very beginning: he can go by what his eyes see or what his ears hear.