The antiphon for 23rd December is O Emmanuel:
O Emmanuel, our King and our Law-giver, Longing of the Gentiles, yea, and salvation thereof, come to save us, O Lord our God!
O Emmanuel, Rex et legifer noster, exspectatio gentium, et Salvator earum: veni ad salvandum nos Domine Deus noster.
Click here to hear it chanted by the Dominican students at Blackfriars, Oxford.
Emmanuel means “God with us.” This title directs us to the Incarnation, in which God himself becomes flesh, like us: a man in all ways but sin. This is the final O antiphon. Tomorrow, in the dark of night, he arrives. We welcome Wisdom, the Lord on high, the Branch of Jesse, the Key of David, the Radiant Dawn, the King of Nations: Emmanuel, God with us.