The Annunciation & Christian SacrificeChristian sacrifice does not consist in a giving of what God would not have without us but in our becoming totally receptive and letting ourselves be completely taken over by him. Letting God act on us—that is Christian sacrifice.
Ratzinger, J. (2004). Introduction to Christianity (Revised Edition). (J. R. Foster, Trans.) (p. 283). San Francisco: Ignatius Press.