The Church draws her life from the Eucharist. This truth does not simply express a daily experience of faith, but recapitulates the heart of the mystery of the Church. In a variety of ways, she joyfully experiences the constant fulfillment of the promise, "Lo, I am with you always, to the close of the age" (Mt 28:20), but in the Holy Eucharist, through the changing of the bread and wine into the Body and Blood of the Lord, she rejoices in this presence with unique intensity. Ever since Pentecost, when the Church, the People of the New Covenant, began her pilgrim journey towards her heavenly homeland, the Diving Sacrament has continued to mark the passing of their days, filling them with hope. -- Pope John Paul II, "On the Eucharist" ["Ecclesia de Eucharistia; EE], no. 1.