Jesus heals a blind man then asks His disciples who they think he is; Peter says He is the Messiah; Jesus then explains how He will soon die and be resurrected but Peter objects, only to be told by Jesus that giving up your own selfish wants was part of following Him: Mark 8:22–30; Matthew 16:13–20; Luke 9:18–20; Mark 8:31–9:1; Matthew 16:21–28; Luke 9:21–27; Mark 9:2–13; Matthew 17:1–13; Luke 9:28–36
It can’t have been easy for the disciples as their teacher explained he could and would be killed:
Mark 8:31 Then Jesus began to tell them that the Son of Man must suffer many terrible things and be rejected by the elders, the leading priests, and the teachers of religious law. He would be killed, but three days later he would rise from the dead.
How can you kill God? What does rise from the dead mean anyway?
Their response was logical, with Peter taking Jesus aside to reprimand Him:
Matthew 16:22 Heaven forbid, Lord. This will never happen to you!