O Emmanuel, Rex et legifer noster,
exspectatio Gentium, et Salvator earum:
veni ad salvandum nos, Domine, Deus noster.
O Emmanuel, our king and our lawgiver,
the hope of the nations and their Saviour:
Come to save us, O Lord our God.
O Virgo virginum, quomodo fiet istud?
Quia nec primam similem visa es nec habere sequentem.
Filiae Jerusalem, quid me admiramini?
Divinum est mysterium hoc quod cernitis.
O Virgin of virgins, how shall this be?
For neither before you was any like you, nor shall there be after.
Daughters of Jerusalem, why marvel at me?
The thing which you behold is a divine mystery.
(Alternative Antiphon in English Medieval usage, up to and including the New English Hymnal)
Therefore the Lord himself will give you a sign. Look, the young woman is with child and shall bear a son, and shall name him Immanuel. (Isaiah 7.14)
O come, Lord Jesus, and heal what is so broken. Restore the places long desolate; make young again the broken hearts. What we cannot understand, make clear. Where there is no justice, let your judgement bring us mercy.