Matthew 16:21-23

From that time on, Jesus began to show his disciples that he must go to Jerusalem and suffer greatly from the elders, the chief priests, and the scribes, and be killed and on the third day be raised. Then Peter took him aside and began to rebuke him, “God forbid, Lord! No such thing shall ever happen to you.” He turned and said to Peter, “Get behind me, Satan! You are an obstacle to me. You are thinking not as God does, but as human beings do.” The Conditions of Discipleship.