Matt. I. 1.
“The book of the generation of Jesus Christ, the Son of David, the Son of Abraham.”
Do you indeed remember the charge, which we lately made you, entreating you to hearken unto all the things that are said with all silence, and mystical quietness? For we are today to set foot within the holy vestibule, wherefore I have also put you in mind of the charge.
Since, if the Jews, when they were to approach “a mountain that burned, and fire, and blackness, and darkness, and tempest;” — or rather when they were not so much as to approach, but both to see and to hear these things from afar—were commanded for three days before to abstain from their wives, and to wash their garments, and were in trembling and fear, both themselves and Moses with them; much more we, when we are to hearken to such words, and are not to stand far from a smoking mountain, but to enter into Heaven itself, ought to show forth a greater self-denial; not washing our garments, but wiping clean the robe of our soul, and ridding ourselves of all mixture with worldly things. For it is not blackness that you shall see, nor smoke, nor tempest, but the King Himself sitting on the throne of that unspeakable glory, and angels, and archangels standing by Him, and the tribes of the saints, with those interminable myriads.
For such is the city of God, having “the Church of the first-born, the spirits of the just, the general assembly of the angels, the blood of sprinkling,” whereby all are knit into one, and Heaven has received the things of earth, and earth the things of Heaven, and that peace has come which was of old longed for both by angels and by saints.
Herein stands the trophy of the cross, glorious, and conspicuous, the spoils won by Christ, the first-fruits of our nature, the booty of our King; all these, I say, we shall out of the Gospels know perfectly. If you follow in becoming quietness, we shall be able to lead you about everywhere, and to show where death is set forth crucified, and where sin is hanged up, and where are the many and wondrous offerings from this war, from this battle.
You shall see likewise the tyrant here bound, and the multitude of the captives following, and the citadel from which that unholy demon overran all things in time past. You will see the hiding places, and the dens of the robber, broken up now, and laid open, for even there also was our King present.
But be not thou weary, beloved, for if any one were describing a visible war, and trophies, and victories, would you feel no satiety at all; nay, you would not prefer either drink or meat to this history. But if that kind of narrative be welcome, much more this. For consider what a thing it is to hear, how on the one side God from Heaven, arising “out of the royal thrones, leaped down” unto the earth, and even unto hell itself, and stood in the battle array; and how the devil on the other hand set himself in array against Him; or rather not against God unveiled, but God hidden in man's nature.
And what is marvellous, you will see death destroyed by death, and curse extinguished by curse, and the dominion of the devil put down by those very things whereby he did prevail. Let us therefore rouse ourselves thoroughly, and let us not sleep, for lo, I see the gates opening to us; but let us enter in with all seemly order, and with trembling, setting foot straightway within the vestibule itself.
Source: Homilies on the Gospel of St. Matthew (New Advent)