All this took place to fulfill what the Lord had spoken by the prophet:
“Behold, a virgin shall conceive and bear a son, and his name shall be called Emmanuel.” (Matthew 1:22-23)


This is why, in Christ, the distance between the prophet and the Lord disappears, because he who has come is Emmanuel, “God-with-us”. All prophecy is a preparation for the coming of God to man in the flesh. Whatever might have been the moral reforms and changes of heart to which the prophets exhorted the Jews, their goal was not the ethical improvement of the world and the pacification of society for their own sakes, but the building of an appropriate tabernacle on earth as dwelling-place for God. Here again, the center of the universe is the womb of the Virgin, where there already dwells the Holy One sent by the Father. The deepest vocation of the world and of society is to become the divine vessel that the Virgin already is. She is the archetype of redeemed creation.

Erasmo Leiva-Merikakis, Fire of Mercy, Heart of the Word: Meditations on the Gospel according to Saint Matthew, Chapters 1–25, vol. 1 (San Francisco: Ignatius Press, 1996–2012), page 70.