After Peter expressed his belief that Jesus is the Messiah, Jesus predicted his own death and resurrection.

Luke 9:18-27

18 One day Jesus was praying in a place where only the disciples were with him. He asked them, “The crowds of people, who do they say that I really am?” 19 They replied, “Some people say that you are John the Baptizer, who has come back to life again. Others say that you are the prophet Elijah, who has returned from heaven as God promised. Others say that you are one of the other prophets who lived long ago, who has come back to life again.” 20 He asked them, “What about you (pl)? Who do you say that I am?” Peter replied, “You (sg) are the Messiah, who has come from God.” 21 Then Jesus warned them strongly not to tell that to anyone yet. 22 Then he said, “Even though I am the one who came from heaven, it is necessary that I suffer very much. It is also necessary that I be rejected by the elders and the chief priests and the men who teach the Jewish laws {that the Jewish elders and the chief priests and the men who teach the Jewish laws will reject me}. It is necessary that I be killed {that people will kill me}. Then on the third day after that, I will become alive again.”

23 Then he said to all of them, “If any one of you wants to be my disciple, you must not do only what you yourself desire to do. Specifically, you must be willing each day [MET] to let others hurt you and disgrace you. That is like what is done to criminals who are forced to carry [MET] crosses to the place where they will be executed. That is what anyone who wants to be my disciple must do. 24 You must do that, because those who try to save their lives by denying that they belong to me when people want to kill them for believing in me will not live eternally, but those who are killed because of being my disciples will live forever with me. 25 People might get everything that they want in this world, but ◄they are really gaining nothing if they do not get eternal life by becoming my disciples!/are they really gaining anything if they do not get eternal life by becoming my disciples?► [RHQ] 26 Those who reject my message and refuse to say that they belong to me, I, the one who came from heaven, will also refuse to say that they belong to me when I come back with the holy angels, and have the glorious brightness that my Father has. 27 But listen carefully! Some of you (pl) who are here now will see God ruling [MET] in many powerful ways. You will see it before you die!”