31[Jesus] began to teach them that the Son of Man must undergo great suffering, and be rejected by the elders, the chief priests, and the scribes, and be killed, and after three days rise again.32He said all this quite openly. And Peter took him aside and began to rebuke him. 33But turning and looking at his disciples, he rebuked Peter and said, “Get behind me, Satan! For you are setting your mind not on divine things but on human things.”
34He called the crowd with his disciples, and said to them, “If any want to become my followers, let them deny themselves and take up their cross and follow me. 35For those who want to save their life will lose it, and those who lose their life for my sake, and for the sake of the gospel, will save it. 36For what will it profit them to gain the whole world and forfeit their life? 37Indeed, what can they give in return for their life? 38Those who are ashamed of me and of my words in this adulterous and sinful generation, of them the Son of Man will also be ashamed when he comes in the glory of his Father with the holy angels.”
Mark 8:31-38
