O Antiphon: God Is With Us

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.)

Again the LORD spoke to Ahaz:
Ask for a sign from the LORD, your God; let it be deep as the nether world, or high as the sky!
But Ahaz answered, "I will not ask! I will not tempt the LORD!"
Then he said: Listen, O house of David! Is it not enough for you to weary men, must you also weary my 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 7:10-14