The main objective of the paper is to show original theological emphasis on Peter the Apostle. Chapter 21 is considered to be a later addition to the Gospel of John. It is necessary to pay a special attention to related issues of editorial text. Despite its seemingly simple structure John 21: 15-19 poses other challenges. One of them is a puzzling variation of terminology. It is therefore necessary to draw attention to possible variants of critical-literary assessment of the biblical text. In John 21: 15-19 Peter is presented as a shepherd. This par-ticular mission is given to him by the Risen Jesus. The flock, which he has to feed, remains Jesus’ property. John 21:18-19 associated the ministry of Peter with his martyrdom. The entire passage has an ecumenical significance. The delegation of pastoral authority can be treated as a one-off event. The historical context of John 21 indicates the unifying character of the ministry of Peter the Apostle. Proper reading of the text can facilitate dialogue on the nature of the primacy of the Bishop of Rome.

The article tries to find a possible model of role that the papal office can play for ec-umenical dialogue. First, the author reviews opinions about the pope and his office issued by the Evangelical Church in the 16th century, especially in Martin Luther’s theology. In the second step, there is an analysis of the ‘pope’ understanding presented by the modern Polish Lutheran theology. According to the applied method of “unity in reconciled diversity” it seems that the pope, as a head of the Roman Catholic Church could be understood as primus inter pares. The article develops the possible consequence of this papal duty in the vision of the ecumenical Pentarchy. It would be an ecumenical collaboration between the 5 biggest traditions of the modern Christianity: Roman Catholicism, Orthodoxy, Eastern Pre-Chalcedonian Churches, Anglicanism and Lutheran Protestantism. This model does not mean a way to the institutional primacy of the Bishop of Rome.