Mark 8:31-37

And he began to teach them, that the Son of man must suffer many things, and be rejected by the elders, and the chief priests, and the scribes, and be killed, and after three days rise again. And he spake the saying openly. And Peter took him, and began to rebuke him. But he turning about, and seeing his disciples, rebuked Peter, and saith, Get thee behind me, Satan; for thou mindest not the things of God, but the things of men. And he called unto him the multitude with his disciples, and said unto them, If any man would come after me, let him deny himself, and take up his cross, and follow me. For whosoever would save his life shall lose it; and whosoever shall lose his life for my sake and the gospel’s shall save it. For what doth it profit a man, to gain the whole world, and forfeit his life? For what should a man give in exchange for his life?