Awake, mankind! For your sake, God has become man. Awake, you who sleep, rise up from the dead, and Christ will enlighten you. I tell you again: for your sake, God has became man.
You would have suffered eternal death, has he not been born in time. Never would you have been freed from sinful flesh, had he not taken on himself the likeness of sinful flesh. You would have suffered everlasting unhappiness, had it not been for this mercy. You would have never returned to life, had he not shared your death. You would have been lost if he had not hastened to your aid. You would have perished, has he not come.
From a sermon by Saint Augustine, bishop, as included in the Office of Readings for December 24th.