St. Peter’s Place of Primacy Among the Twelve
Sts. Peter, James, and John are a special group of disciples that are allowed to witness the Transfiguration2 and accompany Christ to the Mount of Olives.3 In each event, St. Peter, the Rock, is singled out. At the Mount of Olives, Christ finds all three asleep, but it is St. Peter he addresses. During the Transfiguration, it is St. Peter who speaks for the disciples. In St. Luke 5:1-11, Christ calls his first disciples, and the first is Simon Peter. According to Cardinal Ratzinger, the “call of Peter appears as the original pattern of apostolic vocation par excellence.”4 Every time the disciples are listed, St. Peter is listed first.5 Furthermore, when referring to the disciples, sometimes only St. Peter is mentioned by name, e.g., “And Simon and those who were with him,” and “Now Peter and those who were with him”.6 St. Peter is the only one to try to walk on the water (Mt 14:28ff) and he is the one that brings up the famous question of how many times we must forgive.7 Even St. Peter’s shadow was an instrument of healing.8
 
Significance of the Name Change
While it was common for Rabbis to give nicknames or new surnames to their disciples, e.g., the Sons of Zebedee as the “Sons of Thunder,” it was uncommon to change a disciple’s first name. Christ gives Simon the new name “Peter” or Kephas (or Cephas) meaning rock.9 In the Old Testament, God changing someone’s name denoted a special calling, a new vocation, e.g., Abram to Abraham, Sarai to Sarah, Jacob to Israel, etc. St. Peter’s name change denotes that he will have a special vocation among the twelve. Obviously Christ was also referred to as the Rock, because he is the foundation of all things. However, in the rabbinical tradition, Abraham was also referred to as a rock: “Look to the rock from which you were hewn… look to Abraham your father” .10 Cardinal Ratzinger comments:11
Abraham, the father of faith, is by his faith the rock that holds back chaos, the onrushing primordial flood of destruction, and thus sustains creation. Simon, the first to confess Jesus as the Christ and the first witness of the Resurrection, now becomes by virtue of his Abrahamic faith, which is renewed in Christ, the rock that stands against the impure tide of unbelief and its destruction of man.
 
The Papal Office Given to St. Peter by Christ
After the Resurrection, Christ appears to the Twelve and has a unique conversation with St. Peter. Christ, the Shepherd, asks St. Peter three times if he loves him. St. Peter responds yes all three times – presumably this passage should reflect his three denials. Christ also tell St. Peter and Peter alone: feed my lambs, tend my sheep, and feed my sheep. As the Vicar of Christ, St. Peter must care for the flock.12 In Lk 22:31-34, two major Petrine themes are evident. First, Satan has taken a special interest in St. Peter. He will fail, but will repent. Second, after St. Peter has “turned again” to Christ, Jesus commissions him to “strengthen the brethren.” Another mission given only to St. Peter.
In Matthew 16:13-20, the most famous unique call is given to St. Peter: to be the foundation of the Church and to exercise the authority of keys of the kingdom. The office given to St. Peter is that of the Vicar within the Davidic Kingdom. The Vicar governs in the King’s stead, according to the King’s rules, while the King is gone.13 St. Peter is the Vicar of Christ, the Pope.