"The bread is at first common bread. But when the sacramental action consecrates it, it is called the Body of Christ, for it becomes the Body of Christ...The same power of the word makes the priest worthy of veneration and honor. The new blessing separates him from common, ordinary life. Yesterday he was one of the crowd, one of the people. Now, suddenly, he has become a guide, a leader, a teacher of righteousness, an instructor in hidden mysteries. And this he does without any change in body or form. But, while he appears to be the man he was before, his invisible soul has really been transformed to a higher condition by some invisible power and grace."
-Gregory of Nyssa