24. Nevertheless, the Apostle's experiences as a sharer in the sufferings of Christ go even further. In the Letter to the Colossians we read the words which constitute as it were the final stage of the spiritual journey in relation to suffering: "Now I rejoice in my sufferings for your sake, and in my flesh I complete what is lacking in Christ's afflictions for the sake of his body, that is, the Church"(78). And in another Letter he asks his readers: "Do you not know that your bodies are members of Christ?"(79).
In the Paschal Mystery Christ began the union with man in the community of the Church. The mystery of the Church is expressed in this: that already in the act of Baptism, which brings about a configuration with Christ, and then through his Sacrifice—sacramentally through the Eucharist—the Church is continually being built up spiritually as the Body of Christ. In this Body, Christ wishes to be united with every individual, and in a special way he is united with those who suffer. The words quoted above from the Letter to the Colossians bear witness to the exceptional nature of this union. For, whoever suffers in union with Christ— just as the Apostle Paul bears his "tribulations" in union with Christ— not only receives from Christ that strength already referred to but also "completes" by his suffering "what is lacking in Christ's afflictions". This evangelical outlook especially highlights the truth concerning the creative character of suffering. The sufferings of Christ created the good of the world's redemption. This good in itself is inexhaustible and infinite. No man can add anything to it. But at the same time, in the mystery of the Church as his Body, Christ has in a sense opened his own redemptive suffering to all human suffering. In so far as man becomes a sharer in Christ's sufferings—in any part of the world and at any time in history—to that extent he in his own way completes the suffering through which Christ accomplished the Redemption of the world.
Does this mean that the Redemption achieved by Christ is not complete? No. It only means that the Redemption, accomplished through satisfactory love, remains always open to all love expressed in human suffering. In this dimension—the dimension of love—the Redemption which has already been completely accomplished is, in a certain sense, constantly being accomplished. Christ achieved the Redemption completely and to the very limits but at the same time he did not bring it to a close. In this redemptive suffering, through which the Redemption of the world was accomplished, Christ opened himself from the beginning to every human suffering and constantly does so. Yes, it seems to be part of the very essence of Christ's redemptive suffering that this suffering requires to be unceasingly completed.
Thus, with this openness to every human suffering, Christ has accomplished the world's Redemption through his own suffering. For, at the same time, this Redemption, even though it was completely achieved by Christ's suffering, lives on and in its own special way develops in the history of man. It lives and develops as the body of Christ, the Church, and in this dimension every human suffering, by reason of the loving union with Christ, completes the suffering of Christ. It completes that suffering just as the Church completes the redemptive work of Christ. The mystery of the Church—that body which completes in itself also Christ's crucified and risen body—indicates at the same time the space or context in which human sufferings complete the sufferings of Christ. Only within this radius and dimension of the Church as the Body of Christ, which continually develops in space and time, can one think and speak of "what is lacking" in the sufferings of Christ. The Apostle, in fact, makes this clear when he writes of "completing what is lacking in Christ's afflictions for the sake of his body, that is, the Church".
It is precisely the Church, which ceaselessly draws on the infinite resources of the Redemption, introducing it into the life of humanity, which is the dimension in which the redemptive suffering of Christ can be constantly completed by the suffering of man. This also highlights the divine and human nature of the Church. Suffering seems in some way to share in the characteristics of this nature. And for this reason suffering also has a special value in the eyes of the Church. It is something good, before which the Church bows down in reverence with all the depth of her faith in the Redemption. She likewise bows down with all the depth of that faith with which she embraces within herself the inexpressible mystery of the Body of Christ.
VI. THE GOSPEL OF SUFFERING
25. The witnesses of the Cross and Resurrection of Christ have handed on to the Church and to mankind a specific Gospel of suffering. The Redeemer himself wrote this Gospel, above all by his own suffering accepted in love, so that man "should not perish but have eternal life"(80). This suffering, together with the living word of his teaching, became a rich source for all those who shared in Jesus' sufferings among the first generation of his disciples and confessors and among those who have come after them down the centuries.
It is especially consoling to note—and also accurate in accordance with the Gospel and history—that at the side of Christ, in the first and most exalted place, there is always his Mother through the exemplary testimony that she bears by her whole life to this particular Gospel of suffering. In her, the many and intense sufferings were amassed in such an interconnected way that they were not only a proof of her unshakeable faith but also a contribution to the redemption of all. In reality, from the time of her secret conversation with the angel, she began to see in her mission as a mother her "destiny" to share, in a singular and unrepeatable way, in the very mission of her Son. And she very soon received a confirmation of this in the events that accompanied the birth of Jesus in Bethlehem, and in the solemn words of the aged Simeon, when he spoke of a sharp sword that would pierce her heart. Yet a further confirmation was in the anxieties and privations of the hurried flight into Egypt, caused by the cruel decision of Herod.
And again, after the events of her Son's hidden and public life, events which she must have shared with acute sensitivity, it was on Calvary that Mary's suffering, beside the suffering of Jesus, reached an intensity which can hardly be imagined from a human point of view but which was mysterious and supernaturally fruitful for the redemption of the world. Her ascent of Calvary and her standing at the foot of the Cross together with the Beloved Disciple were a special sort of sharing in the redeeming death of her Son. And the words which she heard from his lips were a kind of solemn handing-over of this Gospel of suffering so that it could be proclaimed to the whole community of believers.
As a witness to her Son's Passion by her presence, and as a sharer in it by her compassion, Mary offered a unique contribution to the Gospel of suffering, by embodying in anticipation the expression of Saint Paul which was quoted at the beginning. She truly has a special title to be able to claim that she "completes in her flesh"—as already in her heart—"what is lacking in Christ's afflictions ".
In the light of the unmatchable example of Christ, reflected with singular clarity in the life of his Mother, the Gospel of suffering, through the experience and words of the Apostles, becomes an inexhaustible source for the ever new generations that succeed one another in the history of the Church. The Gospel of suffering signifies not only the presence of suffering in the Gospel, as one of the themes of the Good News, but also the revelation of the salvific power and salvific significance of suffering in Christ's messianic mission and, subsequently, in the mission and vocation of the Church.