ECCLESIA DE EUCHARISTIA
3. The Church was born of the paschal mystery. For this very reason the Eucharist, which is in an outstanding way the sacrament of the paschal mystery, stands at the centre of the Church's life. This is already clear from the earliest images of the Church found in the Acts of the Apostles: “They devoted themselves to the Apostles' teaching and fellowship, to the breaking of bread and the prayers” (2:42). The “breaking of the bread” refers to the Eucharist. Two thousand years later, we continue to relive that primordial image of the Church. At every celebration of the Eucharist, we are spiritually brought back to the paschal Triduum: to the events of the evening of Holy Thursday, to the Last Supper and to what followed it. The institution of the Eucharist sacramentally anticipated the events which were about to take place, beginning with the agony in Gethsemane. Once again we see Jesus as he leaves the Upper Room, descends with his disciples to the Kidron valley and goes to the Garden of Olives. Even today that Garden shelters some very ancient olive trees. Perhaps they witnessed what happened beneath their shade that evening, when Christ in prayer was filled with anguish “and his sweat became like drops of blood falling down upon the ground” (cf. Lk 22:44). The blood which shortly before he had given to the Church as the drink of salvation in the sacrament of the Eucharist, began to be shed; its outpouring would then be completed on Golgotha to become the means of our redemption: “Christ... as high priest of the good things to come..., entered once for all into the Holy Place, taking not the blood of goats and calves but his own blood, thus securing an eternal redemption” (Heb 9:11- 12).
4. The hour of our redemption. Although deeply troubled, Jesus does not flee before his “hour”. “And what shall I say? 'Father, save me from this hour?' No, for this purpose I have come to this hour” (Jn 12:27). He wanted his disciples to keep him company, yet he had to experience loneliness and abandonment: “So, could you not watch with me one hour? Watch and pray that you may not enter into temptation” (Mt 26:40- 41). Only John would remain at the foot of the Cross, at the side of Mary and the faithful women. The agony in Gethsemane was the introduction to the agony of the Cross on Good Friday. The holy hour, the hour of the redemption of the world. Whenever the Eucharist is celebrated at the tomb of Jesus in Jerusalem, there is an almost tangible return to his “hour”, the hour of his Cross and glorification. Every priest who celebrates Holy Mass, together with the Christian community which takes part in it, is led back in spirit to that place and that hour.
“He was crucified, he suffered death and was buried; he descended to the dead; on the third day he rose again”. The words of the profession of faith are echoed by the words of contemplation and proclamation: “This is the wood of the Cross, on which hung the Saviour of the world. Come, let us worship”. This is the invitation which the Church extends to all in the afternoon hours of Good Friday. She then takes up her song during the Easter season in order to proclaim: “The Lord is risen from the tomb; for our sake he hung on the Cross, Alleluia”.
5. “Mysterium fidei! - The Mystery of Faith!”. When the priest recites or chants these words, all present acclaim: “We announce your death, O Lord, and we proclaim your resurrection, until you come in glory”.
In these or similar words the Church, while pointing to Christ in the mystery of his passion, also reveals her own mystery: Ecclesia de Eucharistia. By the gift of the Holy Spirit at Pentecost the Church was born and set out upon the pathways of the world, yet a decisive moment in her taking shape was certainly the institution of the Eucharist in the Upper Room. Her foundation and wellspring is the whole Triduum paschale, but this is as it were gathered up, foreshadowed and “concentrated' for ever in the gift of the Eucharist. In this gift Jesus Christ entrusted to his Church the perennial making present of the paschal mystery. With it he brought about a mysterious “oneness in time” between that Triduum and the passage of the centuries.
and by extension
9. The Eucharist, as Christ's saving presence in the community of the faithful and its spiritual food, is the most precious possession which the Church can have in her journey through history. This explains the lively concern which she has always shown for the Eucharistic mystery, a concern which finds authoritative expression in the work of the Councils and the Popes. How can we not admire the doctrinal expositions of the Decrees on the Most Holy Eucharist and on the Holy Sacrifice of the Mass promulgated by the Council of Trent? For centuries those Decrees guided theology and catechesis, and they are still a dogmatic reference-point for the continual renewal and growth of God's People in faith and in love for the Eucharist. In times closer to our own, three Encyclical Letters should be mentioned: the Encyclical Mirae Caritatis of Leo XIII (28 May 1902),5 the Encyclical Mediator Dei of Pius XII (20 November 1947)6 and the Encyclical Mysterium Fidei of Paul VI (3 September 1965).7
The Second Vatican Council, while not issuing a specific document on the Eucharistic mystery, considered its various aspects throughout its documents, especially the Dogmatic Constitution on the Church Lumen Gentium and the Constitution on the Sacred Liturgy Sacrosanctum Concilium.
and then by further extensionUt unum sint
9. Jesus himself, at the hour of his Passion, prayed "that they may all be one" (Jn 17:21). This unity, which the Lord has bestowed on his Church and in which he wishes to embrace all people, is not something added on, but stands at the very heart of Christ's mission. Nor is it some secondary attribute of the community of his disciples. Rather, it belongs to the very essence of this community. God wills the Church, because he wills unity, and unity is an expression of the whole depth of his agape.
In effect, this unity bestowed by the Holy Spirit does not merely consist in the gathering of people as a collection of individuals. It is a unity constituted by the bonds of the profession of faith, the sacraments and hierarchical communion.10 The faithful are one because, in the Spirit, they are in communion with the Son and, in him, share in his communion with the Father: "Our fellowship is with the Father and with his Son Jesus Christ" (1 Jn 1:3). For the Catholic Church, then, thecommunion of Christians is none other than the manifestation in them of the grace by which God makes them sharers in his own communion, which is his eternal life. Christ's words "that they may be one" are thus his prayer to the Father that the Father's plan may be fully accomplished, in such a way that everyone may clearly see "what is the plan of the mystery hidden for ages in God who created all things" (Eph 3:9). To believe in Christ means to desire unity; to desire unity means to desire the Church; to desire the Church means to desire the communion of grace which corresponds to the Father's plan from all eternity. Such is the meaning of Christ's prayer: "Ut unum sint".
10. In the present situation of the lack of unity among Christians and of the confident quest for full communion, the Catholic faithful are conscious of being deeply challenged by the Lord of the Church. The Second Vatican Council strengthened their commitment with a clear ecclesiological vision, open to all the ecclesial values present among other Christians. The Catholic faithful face the ecumenical question in a spirit of faith.
The Council states that the Church of Christ "subsists in the Catholic Church, which is governed by the Successor of Peter and by the Bishops in communion with him", and at the same time acknowledges that "many elements of sanctification and of truth can be found outside her visible structure. These elements, however, as gifts properly belonging to the Church of Christ, possess an inner dynamism towards Catholic unity".11
"It follows that these separated Churches and Communities, though we believe that they suffer from defects, have by no means been deprived of significance and value in the mystery of salvation. For the Spirit of Christ has not refrained from using them as means of salvation which derive their efficacy from the very fullness of grace and truth entrusted to the Catholic Church".12
11. The Catholic Church thus affirms that during the two thousand years of her history she has been preserved in unity, with all the means with which God wishes to endow his Church, and this despite the often grave crises which have shaken her, the infidelity of some of her ministers, and the faults into which her members daily fall. The Catholic Church knows that, by virtue of the strength which comes to her from the Spirit, the weaknesses, mediocrity, sins and at times the betrayals of some of her children cannot destroy what God has bestowed on her as part of his plan of grace. Moreover, "the powers of death shall not prevail against it" (Mt 16:18). Even so, the Catholic Church does not forget that many among her members cause God's plan to be discernible only with difficulty. Speaking of the lack of unity among Christians, the Decree on Ecumenism does not ignore the fact that "people of both sides were to blame",13 and acknowledges that responsibility cannot be attributed only to the "other side". By God's grace, however, neither what belongs to the structure of the Church of Christ nor that communion which still exists with the other Churches and Ecclesial Communities has been destroyed.
Indeed, the elements of sanctification and truth present in the other Christian Communities, in a degree which varies from one to the other, constitute the objective basis of the communion, albeit imperfect, which exists between them and the Catholic Church.
To the extent that these elements are found in other Christian Communities, the one Church of Christ is effectively present in them. For this reason the Second Vatican Council speaks of a certain, though imperfect communion. The Dogmatic Constitution Lumen Gentium stresses that the Catholic Church "recognizes that in many ways she is linked" 14 with these Communities by a true union in the Holy Spirit.