Peter's Achievements

Tu es, inquit, Petrus, et super hanc petram aedificabo Ecclesiam meam. Petra siquidem erat Christus, summque nomen communicat Petro, ut Petrus petra sit: nam sicut a petra sitienti populo quae in deserto profluxit, ita et a Petro aliis in fide arescentibus salutiferae fidei confessio emanavit. Christi ascensurus in coelum Petro suas oves pascendas agnosque commisit; atque post parvae naviculae regimen, eidem gubernaculum magnae navis, id est, totius Ecclesiae magisterium mancipavit. Petro tanquam optimo dispensatori claves domus suae tradidit. Justitia Petri tantam judicandi obtinuit potestatem, ut de ejus arbitrio coeleste judicium pendeat; nec a Petri sententia etiam angelus appellare praesumat. Interrogatus a Domino Petrus quem eum dicerent homines: brevi confessionis compendio divinae majestatis arcanum declarat in Christo. Non revelavit tibi hic, Petre, caro et sanguis: caro enim et sanguis non possidebunt regnum Dei, sed Spiritus Dei Patris, qui in coelis est. Mirabilis piscator, qui olim profunda aequoris scrutabatur, inscrutabile sacramentum deitatis in Christo fideliter confitetur. Petrus Blenensis, Sermo XXVIII, De SS. Petro et Paulo Source: Migne PL 207.643b-c

'You are Peter,' He said, 'and on this rock I shall build my Church,' and certainly Christ was the rock 1 and He gave His title to Peter so that Peter might be a rock, for as a rock flowed for a parched people in the desert, so the confession of salutary faith would flow from Peter's faith to a thirsty people. Christ, when He was about to ascend to heaven, committed the feeding of His flocks of sheep to Peter, 2 and after his work on a little boat He gave to the same man the captaincy of a greater ship, that is, He bestowed on him the leadership of the whole Church, giving the keys of His own house to Peter as the best dispenser. 3 The righteousness of Peter obtained such great power of judgement, that from his will hangs the judgement of heaven, and not even an angel may presume to appeal the sentence of Peter. When Peter was questioned by the Lord about who men said He was, with a brief confession He proclaimed the secret of the Divine majesty in Christ, 'Flesh and blood did not reveal this to you, Peter,' 'for flesh and blood shall not possess the kingdom of God,' 'but the Spirit of my Father who is in heaven.' 4 A wondrous fisherman, who once gazed down into the depths of the waters, faithfully confessed the mystery of the Divinity in Christ. Peter of Blois, from Sermon 28, On The Feast of the Saints Peter and Paul 1 Mt 16.18, 1 Cor 10.4 2 Jn 21.17 3 Mt 16.19 4 Mt 16.17, 1 Cor 15.50