|ANSWER: Jesus said those words to PETER.
Jesus said to him in reply, "Blessed are you, Simon son of Jonah. For flesh and blood 12 has not revealed this to you, but my heavenly Father.
And so I say to you, you are Peter, and upon this rock I will build my church, 13 and the gates of the netherworld shall not prevail against it.
I will give you the keys to the kingdom of heaven. 14 Whatever you bind on earth shall be bound in heaven; and whatever you loose on earth shall be loosed in heaven. (Mt 16:17-19)
Peter was the first bishop of Rome. Peter’s successors through the centuries are said to sit in the Chair of Peter. Today, Pope Benedict XVI sits in the “Chair of Peter.”