Peter is among the first of those called by Jesus: a fisher of Bethsaida on the lake of Tiberias, a man who certainly gave little time to intellectual formation and who lived his faith especially thanks to the Saturday synagogue worship and then, after Jesus’ call, through the teaching of that teacher who spoke as no one else before him. Generous and impulsive, Peter responded at once to Jesus’ call to follow him, but remained inconstant, an easy victim of fear, capable even of cowardice, to the point of denying him whom he was following as disciple. Always close to Jesus, he sometimes appears as a spokesman of the other disciples, among which he occupied a preeminent position: it would not be able to speak of Jesus’ life without mentioning Peter, who was the first to dare confess boldly faith in Jesus as Messiah. The disciples, like many in the crowd, wondered whether Jesus was a prophet or even “the” prophet of the last times, whether he was the Messiah, the Lord’s Anointed: it was Peter who, on Jesus’ solicitation, made a profession of faith in words that vary in the four Gospels, but which all attest that he was the first to recognize the true identity of Jesus. Peter made this profession not as “spokesman” of the Twelve; rather, he was moved by an interior force, by a revelation that could come to him only from God. To believe that Jesus is the Messiah, the Son of God, was not possible by only analyzing or interpreting what could be a fulfillment of the Scriptures: it was God himself, the Father who is in heaven, who revealed to Peter Jesus’ identity (cf. Mt 16,17). Jesus, thus, recognized his disciple Simon as a “rock”, Kefa, a stone on whose faith the community, the Church, could find a foundation.