According to Matthew, when the angel Gabriel appeared to Joseph, he said that Mary’s conception, and the birth of Jesus “was done, that it might be fulfilled which was spoken of the Lord by the prophet,” and quoted Isaiah: “Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel” ( Isaiah 7:14 ; cf. Matthew 1:22–23 ). Gabriel’s point was to show that Jesus was the long-...