53. If we wish to rediscover in all its richness the profound relationship between the Church and the Eucharist, we cannot neglect Mary, Mother and model of the Church. In my Apostolic Letter Rosarium Virginis Mariae, I pointed to the Blessed Virgin Mary as our teacher in contemplating Christ's face, and among the mysteries of light I included the institution of the Eucharist.102 Mary can guide us towards this most holy sacrament, because she herself has a profound relationship with it.
At first glance, the Gospel is silent on this subject. The account of the institution of the Eucharist on the night of Holy Thursday makes no mention of Mary. Yet we know that she was present among the Apostles who prayed “with one accord” (cf. Acts 1:14) in the first community which gathered after the Ascension in expectation of Pentecost. Certainly Mary must have been present at the Eucharistic celebrations of the first generation of Christians, who were devoted to “the breaking of bread” (Acts 2:42).
But in addition to her sharing in the Eucharistic banquet, an indirect picture of Mary's relationship with the Eucharist can be had, beginning with her interior disposition. Mary is a “woman of the Eucharist” in her whole life. The Church, which looks to Mary as a model, is also called to imitate her in her relationship with this most holy mystery.
54. Mysterium fidei! If the Eucharist is a mystery of faith which so greatly transcends our understanding as to call for sheer abandonment to the word of God, then there can be no one like Mary to act as our support and guide in acquiring this disposition. In repeating what Christ did at the Last Supper in obedience to his command: “Do this in memory of me!”, we also accept Mary's invitation to obey him without hesitation: “Do whatever he tells you” (Jn 2:5). With the same maternal concern which she showed at the wedding feast of Cana, Mary seems to say to us: “Do not waver; trust in the words of my Son. If he was able to change water into wine, he can also turn bread and wine into his body and blood, and through this mystery bestow on believers the living memorial of his passover, thus becoming the 'bread of life'”.