From then on Jesus began to tell his disciples plainly that it was necessary for him to go to Jerusalem, and that he would suffer many terrible things at the hands of the elders, the leading priests, and the teachers of religious law. He would be killed, but on the third day he would be raised from the dead.
References for Matthew 16:21
But Peter took him aside and began to reprimand him for saying such things. “Heaven forbid, Lord,” he said. “This will never happen to you!”
References for Matthew 16:22
Jesus turned to Peter and said, “Get away from me, Satan! You are a dangerous trap to me. You are seeing things merely from a human point of view, not from God’s.”