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 said this plainly. And Peter took him aside and began to rebuke him. But turning and seeing his disciples, he rebuked Peter and said, “Get behind me, Satan! For you are not setting your mind on the things of God, but on the things of man.”
Yeshu addresses his most eager disciple with some of the sternest words that he ever spoke, but at the same time he turns to all of them because they too dream, as Peter does, that he will be a glorious earthly Messiah King.
No. He must take onto himself the negative karma of many by dying – in their stead – a bitter and shameful death.
He could do it. He had no sin, he had only unlimited merit – enough merit to cancel all the sin of believers and be their Saviour. He could say to the king of hell (gshin rje chos rgyal), “You have no power over me”; and – rising from death and hell after three days – break out of the prison of samsara (‘khor ba).