Mary’s Devotion to the Eucharist Mary’s Devotion to the Eucharist Madonna of the Host, painted by Jean-Auguste Ingres, now in the Museum d’Orsay, Paris Contemplative Riches of the Mass, Part IV From the Book By a Hermitess It is most becoming to insist here a little on what Holy Mass and Holy Communion, received from the hands of St. John, must have meant for Our Blessed Lady. Why had Mary been committed to St. John on Calvary rather than to the holy women who were also at the foot of the Cross? The reason was that St. John was a priest and had a treasure which they could not give her, the treasure of the Eucharist.