Matthew 16:23-25

But he turned, and said unto Peter, Get thee behind me, Satan: thou art a stumbling-block unto me: for thou mindest not the things of God, but the things of men. Then said Jesus unto his disciples, 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 shall find it.