Jesus declared he is the rock on which the church is built.
Today, however, Peter's faith waivers when Jesus tells of his impending suffering, even death on the cross (as some Christians this minute are crucified, buried alive even, in Iraq!)
Catholics look here in Matthew regarding the Pope, successor of Peter.
After Jesus is said to be "rock," Peter is challenged to build the Church.
A peg in a sure spot, like Eliakim in Isaiah 22.
Like gravity, ground of all being, and, a fixed place, posture, point forever.
Popes are like all of the community of disciples of Jesus, like Francis, our current pope, (Romans 11), and, any "who has known the mind of the Lord or who has been his counselor?"
Papacy is a charism, a gift, a favor and blessing to unite Catholics and the world in this universal Church down through history.
Pope Francis fills the office of "rock" passed on by Jesus from Peter.
A good thing, no?
Like a rock.
A solid foundation.