Most of the holy fathers, and patriarchs, and prophets desired to see Him, and to be eye-witnesses of Him, but did not attaint hereto. And some of them by visions beheld Him in type, and darkly; others, again, were privileged to hear the divine voice through the medium of the cloud, and were favoured with sights of holy angels; but to Mary the pure virgin alone did the archangel Gabriel manifest himself luminously, bringing her the glad address, “Hail, thou that art highly favoured!”
And thus she received the word, and in the due time of the fulfilment according to the body's course she brought forth the priceless pearl. Come, then, you too, dearly beloved, and let us chant the melody which has been taught us by the inspired harp of David, and say, “Arise, O Lord, into Your rest; You, and the ark of Your sanctuary.” For the holy Virgin is in truth an ark, wrought with gold both within and without, that has received the whole treasury of the sanctuary. “Arise, O Lord, into Your rest.”
Arise, O Lord, out of the bosom of the Father, in order that You may raise up the fallen race of the first-formed man. Setting these things forth, David in prophecy said to the rod that was to spring from himself, and to sprout into the flower of that beauteous fruit, “Hearken, O daughter, and see, and incline your ear, and forget your own people and your father's house; so shall the King greatly desire your beauty: for He is the Lord your God, and you shall worship Him.” Hearken, O daughter, to the things which were prophesied beforetime of you, in order that you may also behold the things themselves with the eyes of understanding.
Hearken to me while I announce things beforehand to you, and hearken to the archangel who declares expressly to you the perfect mysteries. Come then, dearly beloved, and let us fall back on the memory of what has gone before us; and let us glorify, and celebrate, and laud, and bless that rod that has sprung so marvellously from Jesse. For Luke, in the inspired Gospel narratives, delivers a testimony not to Joseph only, but also to Mary the mother of God, and gives this account with reference to the very family and house of David: “For Joseph went up,” says he, “from Galilee, unto a city of Judea which is called Bethlehem, to be taxed with Mary his espoused wife, being great with child, because they were of the house and family of David.
And so it was, that while they were there, the days were accomplished that she should be delivered; and she broughtforth her son, the first-born of the whole creation, and wrapped him in swaddling-clothes, and laid him in a manger, because there was no room for them in the inn.” She wrapped in swaddling-clothes Him who is covered with light as with a garment. She wrapped in swaddling-clothes Him who made every creature. She laid in a manger Him who sits above the cherubim, and is praised by myriads of angels.
In the manger set apart for dumb brutes did the Word of God repose, in order that He might impart to men, who are really irrational by free choice, the perceptions of true reason. In the board from which cattle eat was laid the heavenly Bread, in order that He might provide participation in spiritual sustenance for men who live like the beasts of the earth. Nor was there even room for Him in the inn. He found no place, who by His word established heaven and earth; “for though He was rich, for our sakes He became poor,” and chose extreme humiliation on behalf of the salvation of our nature, in His inherent goodness toward us.
He who fulfilled the whole administration of unutterable mysteries of the economy in heaven in the bosom of the Father, and in the cave in the arms of the mother, reposed in the manger. Angelic choirs encircled Him, singing of glory in heaven and of peace upon earth. In heaven He was seated at the right hand of the Father; and in the manger He rested, as it were, upon the cherubim. Even there was in truth His cherubic throne; there was His royal seat. Holy of the holy, and alone glorious upon the earth, and holier than the holy, was that wherein Christ our God rested. To Him be glory, honour, and power. together with the Father undefiled, and the altogether holy and quickening Spirit, now and ever, and unto the ages of the ages. Amen.
Source: Four Homilies (New Advent)