The world is forever telling us to do more to be better to earn and produce and reform and things largely stay the same.
Jesus, on the other hand, is forever telling us that the most important thing has already been finished, the only thing we have to do is trust him.
Peter, like us, wants so desperately to be the master of his own fate, he wants to be in control of what happens and to whom. His imagination of the Kingdom of God is limited by his imagination of earthly kingdoms. But Jesus didn’t come to bring us more of the same.
He came to raise the dead.
And the dead can’t raise themselves.