with the Father and openness to becoming one with him, are essential. This unity, then, is not something purely interior or mystical. It must become visible, so visible as to prove before the world that Jesus was sent by the Father. Consequently, Jesus' prayer has an underlying Eucharistic meaning which Paul clearly brings out in the First Letter to the Corinthians: "The bread that we break, is it not a sharing in the body of Christ? Because there is one bread, we who are many, are one body, for we all partake of the one bread" (1 Cor 10:16ff.).

With the Eucharist, the Church is born. All of us eat the one bread and receive the one body of the Lord; this means that he opens each of us up to something above and beyond us. He makes all of us one. The Eucharist is the mystery of the profound closeness and communion of each individual with the Lord and, at the same time, of visible union between all. The Eucharist is the sacrament of unity. It reaches the very mystery of the Trinity and thus creates visible unity. Let me say it again: it is an extremely personal encounter with the Lord and yet never simply an act of individual piety. Of necessity, we celebrate it together.

In each community the Lord is totally present. Yet in all the communities he is but one. Hence the words "una cum Papa nostro et cum episcopo nostro" are a requisite part of the Church's Eucharistic Prayer. These words are not an addendum of sorts, but a necessary expression of what the Eucharist really is. Furthermore, we mention the Pope and the Bishop by name: unity is something utterly concrete, it has names. In this way unity becomes visible; it becomes a sign for the world and a concrete criterion for ourselves.

Saint Luke has preserved for us one concrete element of Jesus' prayer for unity: "Simon, Simon, behold, Satan demanded to have you, that he might sift you like wheat, but I have prayed for you, that your faith may not fail; and when you have turned again, strengthen your brethren" (Lk 22:31). Today we are once more painfully aware that Satan has been permitted to sift the disciples before the whole world. And we know that Jesus prays for the faith of Peter and his successors. We know that Peter, who walks towards the Lord upon the stormy waters of history and is in danger of sinking, is sustained ever anew by the Lord's hand and guided over the waves. But Jesus continues with a prediction and a mandate. "When you have turned again.".

Every human being, save Mary, has constant need of conversion. Jesus tells Peter beforehand of his coming betrayal and conversion. But what did Peter need to be converted from? When first called, terrified by the Lord's divine power and his own weakness, Peter had said: "Go away from me, Lord, for I am a sinful man!" (Lk 5:8). In the light of the Lord, he recognizes his own inadequacy. Precisely in this way, in the humility of one who knows that he is a sinner, is he called.  He must discover this humility ever anew.

At Caesarea Philippi Peter could not accept that Jesus would have to suffer and be crucified: it did not fit his image of God and the Messiah. In the Upper Room he did not want Jesus to wash his feet: it did not fit his image of the dignity of the Master. In the Garden of Olives he wielded his sword. He wanted to show his courage. Yet before the servant girl he declared that he did not know Jesus. At the time he considered it a little lie which would let him stay close to Jesus. All his heroism collapsed in a shabby bid to be at the centre of things.

We too, all of us, need to learn again to accept God and Jesus Christ as he is, and not the way we want him to be. We too find it hard to accept that he bound himself to the limitations of his Church and her ministers. We too do not want to accept that he is powerless in this world. We too find excuses when being his disciples starts becoming too costly, too dangerous. All of us need the conversion which enables us to accept Jesus in his reality as God and man. We need the humility of the disciple who follows the will of his Master. Tonight we want to ask Jesus to look to us, as with kindly eyes he looked to Peter when the time was right, and to convert us.

After Peter was converted, he was called to strengthen his brethren. It is not irrelevant that this task was entrusted to him in the Upper Room. The ministry of unity has its visible place in the celebration of the Holy Eucharist. Dear friends, it is a great consolation for the Pope to know that at each Eucharistic celebration everyone prays for him, and that our prayer is joined to the Lord 's prayer for Peter. Only by the prayer of the Lord and of the Church can the Pope fulfill his task of strengthening his brethren - of feeding the flock of Christ and of becoming the guarantor of that unity which becomes a visible witness to the mission which Jesus received from the Father.

"I have eagerly desired to eat this Passover with you". Lord, you desire us, you desire me. You eagerly desire to share yourself with us in the Holy Eucharist, to be one with us. Lord, awaken in us the desire for you. Strengthen us in unity with you and with one another. Grant unity to your Church, so that the world may believe. Amen.