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 and save us, O Lord our God.

Therefore the Lord himself will give you this sign: the virgin shall be with child, and bear a son, and shall name him Immanuel. Isaiah 7:14

For more information on the O Antiphons, click here to read the December 17th post.