Peter and the Keys of the Kingdom

The office of the Pope finds its foundation in the words of Christ Himself. In Matthew 16:18–19, Jesus declares to Peter, “You are Peter, and on this rock I will build my Church… I will give you the keys of the kingdom of heaven.” This passage reveals not only Peter’s unique role among the apostles, but also Christ’s intention to establish a visible, enduring leadership for His Church.

The imagery of the “keys” echoes Isaiah 22:22, where authority is passed to a steward over the house of David—pointing to Peter as steward over the household of the New Covenant. Though Peter was a man of weakness, Jesus nonetheless chose him to strengthen the brethren (Luke 22:32) and to feed His sheep (John 21:15–17).

In Acts 15, Peter exercises this leadership at the Council of Jerusalem, where his words bring clarity and peace to a divisive matter. From the earliest days, the Church recognized Peter’s primacy, a role continued by his successors in Rome.

The papacy, then, is not a human invention, but a gift from Christ for the unity and guidance of His Church.