“When God through Moses led the children of Israel out of Egypt (which he did on the fourteenth day of Nisan, which always begins in March – this was the first Jewish Passover), Moses arranged on God’s behalf that the people in every house should eat a roast lamb and cover the doorframes  and lintel of the house with the lamb’s blood. In this way they were protected against the avenging angel.  Moses then led God’s people out of Egypt through the Red Sea, and he fed them for forty years with heavenly bread.  All these signs and figures have prefigured the Blessed Sacrament.”