"And David signifying His incarnate presence said “He shall come down like the rain into a fleece of wool, and like the drop which distills upon the earth” because He noiselessly and gently entered into the Virgin’s womb." (St. John Chrysostom)
"Now the virginity of Mary was hidden from the prince of this world, as was also her offspring, and the death of the Lord; three mysteries of renown,which were wrought in silence by God. How, then, was He manifested to the world? A star shone forth in heaven above all the other stars, the light of which was inexpressible, while its novelty struck men with astonishment." (St. Ignatius of Antioch)
May God bless you with His divine silence and peace this Christmas night.
The lyrics to this chant evoke the prophecy in the O Antihon, O Flower of Jesse Stem:
O branch, coming into leaf, standing in your nobility just as dawn advances: now rejoice and be glad and deem us, helpless ones, worthy; free us from evil habits and even reach out your hand to lift us.
The translation source is Chantblog, which links to a pdf page that would not open for me.
English translation from the U.S. Liturgy of the Hours, Evening Prayer for December 20:
"O Key of David, O royal power of Israel controlling at your will the gate of heaven: come, break down the prison walls of death for those who dwell in darkness and the shadow of death; and lead your captive people into freedom."
English translation from the U.S. Liturgy of the Hours, Evening Prayer for December 19:
"O Flower of Jesse's Stem, you have been raised up as a sign for all peoples; kings stand silent in your presence; the nations bow down in worship before you. Come, let nothing keep you from coming to our aid."