1. The promise made by Jesus to Simon Peter, to make him the cornerstone of his Church, is reflected in the mandate that Christ entrusts to him after the resurrection: "Feed my lambs", "Shepherd my sheep" (John 21: 15-17). There is an objective relationship between the conferring of the mission attested by John's account, and the promise reported by Matthew (cf. Matthew 16: 18-19). In Matthew's text there was an announcement. In John's there is the fulfilment of the proclamation. The words: "Shepherd my sheep" manifest Jesus' intention to ensure the future of the Church he founded, under the leadership of a universal shepherd, namely Peter, to whom he said that, by his grace, he would be "stone" and who would have the "keys of the kingdom of heaven", with the power "to bind and loose". Jesus, after the resurrection, gives concrete form to the proclamation and promise of Caesarea Philippi, establishing Peter's authority as the pastoral ministry of the Church, on a universal scale.

2. Let us say at once that this pastoral mission includes the task of "confirming the brethren" in the faith, which we discussed in the previous catechesis. "Confirming the brethren" and "shepherding the sheep" jointly constitute Peter's mission: one might say the proprium of his universal ministry. As the First Vatican Council states, the constant tradition of the Church has rightly held that the apostolic primacy of Peter 'includes also the supreme power of magisterium' (cf.) Both the primacy and the power of magisterium are conferred directly by Jesus on Peter as a singular person, although both prerogatives are ordered to the Church, without however deriving from the Church, but only from Christ. The primacy is given to Peter (cf. Mt 16, 18) as - the expression is Augustine's - "totius Ecclesiae figuram gerenti" (Epist., 53, 1.2), i.e. insofar as he personally represents the whole Church; and the task and power of magisterium is conferred on him as confirmed faith so that it may be confirming for all the "brethren" (cf. Lk 22, 31 f). But everything is in the Church and for the Church, of which Peter is the foundation, claviger and pastor in its visible structure, in the name and by mandate of Christ.

3. Jesus had foretold this mission to Peter not only in Caesarea Philippi, but also in the first miraculous catch of fish, when, to Simon who recognised himself as a sinner, he had said: "Do not be afraid; from now on you will be fishers of men" (Lk 5:10). On this occasion, Jesus had reserved this proclamation for Peter personally, distinguishing him from his companions and associates, including the "sons of Zebedee", James and John (cf. Lk 5:10). Also in the second miraculous fishing, after the resurrection, the person of Peter emerges in the midst of the other Apostles, according to John's description of the event (John 21, 2 ff), almost as if to hand down the memory of it in the framework of a prophetic symbolism of the fruitfulness of the mission entrusted by Christ to those fishermen.

4. When Jesus is about to confer the mission on Peter, he addresses him with an official appellation: "Simon, son of John" (Jn 21:15), but then takes on a familiar and friendly tone: "Do you love me more than these men?". This question expresses an interest in the person of Simon Peter and is related to his election for a personal mission. Jesus formulates it three times, not without an implicit reference to the threefold denial. And Peter gives an answer that is not based on trust in his own personal strengths and abilities, on his own merits. He now knows that he must place all his trust in Christ alone: "Lord, you know everything, you know that I love you" (Jn 21:17). Evidently the task of a shepherd requires a special love for Christ. But it is he, it is God who gives everything, even the ability to respond to the vocation, to fulfil one's mission. Yes, it must be said that "everything is grace", especially at that level!

5. And having received the desired response, Jesus confers on Simon Peter the pastoral mission: "Shepherd my lambs"; "Shepherd my sheep". It is like an extension of the mission of Jesus, who said of himself: 'I am the good shepherd' (Jn 10:11). Jesus, who shared with Simon his quality of 'stone', also communicates to him his mission as 'shepherd'. It is a communication that implies an intimate communion, which also transpires from Jesus' formulation: 'Shepherd my lambs . . . my sheep'; as he had already said: 'On this rock I will build my Church' (Mt 16:18). The Church is Christ's property, not Peter's. Lambs and sheep belong to Christ, and to no-one else. They belong to him as the "good Shepherd", who "lays down his life for his sheep" (Jn 10:11). Peter must take on the pastoral ministry to men redeemed "with the precious blood of Christ" (1 Pet 1:19). On the relationship between Christ and men, who have become His property through redemption, is founded the character of service that marks the power attached to the mission conferred on Peter: service to Him who alone is "shepherd and guardian of our souls" (1 Pet 2:25), and at the same time to all those whom Christ the Good Shepherd has redeemed at the price of the sacrifice of the cross. Moreover, the content of this service is clear: just as the shepherd leads the sheep to the places where they can find food and safety, so the shepherd of souls must offer them the food of God's word and his holy will (cf. Jn 4:34), ensuring the unity of the flock and defending it from any hostile incursion.

6. Of course, mission entails power, but for Peter - and for his successors - it is a power ordered to service, a specific service, a ministerium. Peter receives it in the community of the Twelve. He is one of the community of the Apostles. But there is no doubt that Jesus, both through the proclamation (cf. Mt 16:18-19), and through the conferring of the mission after his resurrection, relates in a special way to Peter what he conveys to all the Apostles, as mission and as power. Only to him does Jesus say: 'Shepherd', repeating it three times. It follows that, in the context of the common task of the Twelve, a mission and a power are delineated for Peter, which belong to him alone.

7. Jesus addresses Peter as a single person in the midst of the Twelve, not merely as a representative of these Twelve: "Do you love me more than these?" (Jn 21:15). This subject - the you of Peter - is asked for the declaration of love and is conferred this singular mission and authority. Peter is thus distinct among the other Apostles. Even the threefold repetition of the question about Peter's love, probably in connection with his threefold denial of Christ, accentuates the fact of the conferral on him of a particular ministerium, as a decision of Christ Himself, independently of any quality or merit of the Apostle, and indeed despite his momentary infidelity.

8. The communion in the messianic mission, established by Jesus with Peter through that mandate: "Shepherd my lambs . . .", cannot but entail a participation of the Apostle-Shepherd in the sacrificial state of Christ the Good Shepherd "who lays down his life for his sheep". This is the key to the interpretation of many events in the history of the pontificate of Peter's successors. Over the whole arc of this story hovers that prediction of Jesus: "When you are old you will stretch out your hands, and another will gird your garment and take you where you will not" (Jn 21:18). It was the prediction of the confirmation that Peter would give to his pastoral ministry with his death by martyrdom. As John says, by such a death Peter would "glorify God" (Jn 21:19). The pastoral service, entrusted to Peter in the Church, would have its consummation in the participation in the sacrifice of the cross, offered by Christ for the redemption of the world. The cross, which had redeemed Peter, would thus become for him the privileged means to fully exercise his task as "Servant of the servants of God".

[Pope John Paul II, General Audience 9 December 1992]