The Institution of the Eucharist
At the Mystical Supper in the Upper Room Jesus gave a radically new meaning to the food and drink of the sacred meal. He identified Himself with the bread and wine: "Take, eat; this is my Body. Drink of it all of you; for this is my Blood of the New Covenant" (Matthew 26:26-28).
We have learned to equate food with life because it sustains our earthly existence. In the Eucharist the distinctively unique human food - bread and wine - becomes our gift of life. Consecrated and sanctified, the bread and wine become the Body and Blood of Christ. This change is not physical but mystical and sacramental. While the qualities of the bread and wine remain, we partake of the true Body and Blood of Christ. In the Eucharistic meal God enters into such a communion of life that He feeds humanity with His own being, while still remaining distinct. In the words of St. Maximos the Confessor, Christ, "transmits to us divine life, making Himself eatable." The Author of life shatters the limitations of our createdness. Christ acts so that "we might become sharers of divine nature" (2 Peter 1:4).
The Eucharist is at the center of the Church's life. It is her most profound prayer and principal activity. It is at one and the same time both the source and the summit of her life. In the Eucharist the Church manifests her true nature and is continuously changed from a human community into the Body of Christ, the Temple of the Holy Spirit, and the People of God. The Eucharist is the pre-eminent sacrament. It completes all the others and recapitulates the entire economy of salvation. Our new life in Christ is constantly renewed and increased by the Eucharist. The Eucharist imparts life and the life it gives is the life of God.
In the Eucharist the Church remembers and enacts sacramentally the redemptive event of the Cross and participates in its saving grace. This does not suggest that the Eucharist attempts to reclaim a past event. The Eucharist does not repeat what cannot be repeated. Christ is not slain anew and repeatedly. Rather the eucharistic food is changed concretely and really into the Body and Blood of the Lamb of God, "Who gave Himself up for the life of the world." Christ, the Theanthropos, continually offers Himself to the faithful through the consecrated Gifts, i.e., His very own risen and deified Body, which for our sake died once and now lives (Hebrewa 10:2; Revelation 1:18). Hence, the faithful come to Church week by week not only to worship God and to hear His word. They come, first of all, to experience over and over the mystery of salvation and to be united intimately to the Passion and Resurrection of the Lord Jesus Christ.
In the Eucharist we receive and partake of the resurrected Christ. We share in His sacrificed, risen and deified Body, "for the forgiveness of sins and life eternal" (Divine Liturgy). In the Eucharist Christ pours into us - as a permanent and constant gift - the Holy Spirit, "Who bears witness with our spirit that we are children of God - and if children - then heirs with Christ (Romans 8:16-17).