Pseudo-Jerome
Catena Aurea · Markusevangelium 14
And as they did eat, Jesus took bread, and blessed, and brake it, and gave to them, and said, Take, eat: this is my body. And he took the cup, and when he had given thanks, he gave it to them: and they all drank of it. And he said unto them, This is my blood of the new testament, which is shed for many. Verily I say unto you, I will drink no more of the fruit of the vine, until that day that I drink it new in the kingdom of God.
But in a mystical sense, the Lord transfigures into bread His body, which is the present Church, which is received in faith, is blessed in its number, is broken in its sufferings, is given in its examples, is taken in its doctrines; and He forms His Blood (formans sanguinem suum ap. Pseudo-Hier.) in the chalice of water and wine mingled together, that by one we may be purged from our sins, by the other redeemed from their punishment. For by the blood of the lamb our houses are preserved from the smiting of the Angel, and our enemies perish in the waters of the Red sea, which are the sacraments of the Church of Christ. Wherefore it goes on: And he took the cup, and when he had given thanks, he gave it to them. For we are saved by the grace of the Lord, not by our own deserts.