O Emmanuel, Rex et legifer noster, exspectatio gentium, et Salvator earum: veni ad salvandum nos Domine Deus noster.

O Emmanuel, God with us, our King and lawgiver, the expected of the nations and their Savior: come to save us, O Lord our God.

Isaias 7:14
Therefore the Lord himself shall give you a sign. Behold a virgin shall conceive, and bear a son and his name shall be called Emmanuel.