9 Don't you understand yet? Don't you remember the five loaves that fed the five thousand and how many baskets of leftovers you gathered?10 And the seven loaves that fed the four thousand and how many large baskets of leftovers you gathered?11 Don't you know that I wasn't talking about bread? But be on your guard for the yeast of the Pharisees and Sadducees."
Then they understood that he wasn't telling them to be on their guard for yeast used in making bread. No, he was telling them to watch out for the teaching of the Pharisees and Sadducees.
Now when Jesus came to the area of Caesarea Philippi, he asked his disciples, "Who do people say the Human Onea is?"
They replied, "Some say John the Baptist, others Elijah, and still others Jeremiah or one of the other prophets."
He said, "And what about you? Who do you say that I am?"
Simon Peter said, "You are the Christ, the Son of the living God."
Then Jesus replied, "Happy are you, Simon son of Jonah, because no human has shown this to you. Rather my Father who is in heaven has shown you.18 I tell you that you are Peter.b And I'll build my church on this rock. The gates of the underworld won't be able to stand against it.19 I'll give you the keys of the kingdom of heaven. Anything you fasten on earth will be fastened in heaven. Anything you loosen on earth will be loosened in heaven."