Ambrose: "Flesh and Blood"

“NOW we, as often as we receive the Sacraments, which by the mystery of holy prayer are transformed (transfigurantur) into Flesh and Blood, proclaim the Lord’s death.”

~St. Ambrose:  Concerning Faith, 4, 124.

Institution of the Eucharist (Cell 35), by Fra Angelico.
Fresco, 1441-42; Convento di San Marco, Florence.