^17-20 “Simon, son of Jonah, you are a fortunate man indeed!” said Jesus, “for it was not your own nature but my Heavenly Father who has revealed this truth to you! Now I tell you that you are Peter the rock, and it is on this rock that I am going to found my Church, and the powers of death will never prevail against it. I will give you the keys of the kingdom of Heaven; whatever you forbid on earth will be what is forbidden in Heaven and whatever you permit on earth will be what is permitted in Heaven!” Then he impressed on his disciples that they should not tell anyone that he was Christ.

Jesus speaks about his passion, and the cost of following him

²¹ From that time onwards Jesus began to explain to his disciples that he would have to go to Jerusalem, and endure much suffering from the elders, chief priests and scribes, and finally be killed; and be raised to life again on the third day.

^22-23 Then Peter took him on one side and started to remonstrate with him over this. “God bless you, Master! Nothing like this must happen to you!” Then Jesus turned round and said to Peter, “Out of my way, Satan! ... you stand right in my path, Peter, when you look at things from man’s point of view and not from God’s”