In the year 1453, a fierce war was raging amongst the French, the Savoyards and the Piedmontese. At the sack of the little town of Exilles a robber entered the church, broke open the door of the tabernacle, and took out the ostensorium containing the Host. He hastened away with this and other objects, concealing them in a sack. He loaded the objects on a mule and hastened to Turin to effect the sacrilegious sale of them. But the hand of the Lord was present! Having reached the square of St. Sylvester–it was the 6th of June–the animal stopped suddenly, fell to the ground, and no force could make him move. The cords of the sack were unloosed, then the ostensorium with the Host comes forth, and instead of falling to the earth rises slowly into the air and is visible from all sides. A crowd at once gathers round and cries out "a miracle"; the numbers were so great that even the roofs were filled with people. The Archbishop... hastily comes up and awestruck is wrapt in quiet prayer. It is related that the ostensorium fell at once, and the Host remained balanced in the air, flashing forth a most brilliant light. Meanwhile the Archbishop caused a chalice to be brought, and prayed the Lord to deign to descend into it; and the Host, its light growing less and less, descended into the chalice amidst the commotion, the cries and the tears of that immense multitude. It was then brought to the Cathedral, and by order from Rome was consumed... a commemoration stone enclosed by an iron railing was afterwards placed where the miracle occurred, and later the municipality of Turin erected there a church, one of the most beautiful in the city, and called it Corpus Domini.

The Real Presence of Jesus Christ in the Eucharist
Cardinal Gaetano De Lai