The Pharisees and Sadducees ask Jesus for a sign from heaven to test him. He answers that they can read the look of the sky but not the signs of the times, and that no sign will be given to that generation except the sign of Jonah. Crossing the sea, the disciples forget to bring bread, and Jesus warns them to beware of the leaven of the Pharisees and Sadducees.
In the region of Caesarea Philippi, Jesus asks who people say the Son of Man is. They answer that some say John the Baptist, others Elijah, Jeremiah or one of the prophets. Then he asks the disciples who they say he is, and Simon Peter answers: you are the Christ, the Son of the living God. Jesus declares him blessed, because flesh and blood did not reveal this to him but the Father in heaven. He tells him he is Peter and that on this rock he will build his church, and the gates of Hades will not prevail against it. He promises him the keys of the kingdom of heaven, and whatever he binds or looses on earth will be bound or loosed in heaven.
From then on Jesus begins to explain that he must go to Jerusalem and suffer many things from the elders, chief priests and scribes, be killed and be raised on the third day. Peter takes him aside and rebukes him, saying that this will never happen to him. Jesus turns and tells him to get behind him, Satan, because he is a hindrance and is not setting his mind on the things of God but on the things of man. Then he tells the disciples that whoever wants to follow him must deny himself, take up his cross and follow him; whoever wants to save his life will lose it, and whoever loses it for his sake will find it. He announces that the Son of Man will come in the glory of his Father and repay each person according to his deeds, and that some standing there will not taste death before they see him coming in his kingdom.