"This food we call Eucharist, which no one is allowed to share except the one who believes that our teaching is true, and who has been washed with the washing that is for the remission of sins, and unto regeneration, and so lives as Christ has handed down. For we do not receive these as common bread and common drink; but just as Jesus Christ our Savior, having been made flesh by the word of God, had both flesh and blood for our salvation, so likewise we have learned that the food over which thanks has been given by the prayer of the word which comes from him, and by which our blood and flesh are nourished through a change, is the Flesh and Blood of the same incarnate Jesus" (The First Apology).