"O faithful, share the glad tidings of the recreation of the world"

The Annunciation of the Theotokos (source)

The General of the Angelic Powers was sent from God Pantocrator to the Pure Virgin to bring the strange good news of the incomparable wonder: that God will become a babe from her, without seed, refashioning mortals of every race. O faithful, share the glad tidings of the recreation of the world.

-Exaposteilarion of the Great Feast of the Annunciation

(source)

Through the prayers of our Holy Fathers, Lord Jesus Christ our God, have mercy on us and save us! Amen!