|Christian god being sacrificed to itself|
The sacrifice of this legendary incarnation of their god was supposedly an act of atonement for something some legendary remote ancestors supposedly did, and for which their god had arbitrarily and apparently capriciously, and against any notion of natural justice, decreed us all to be responsible.
The legend goes that, although believed to be omnipotent, the Christian god lacked the power to remove this designation of guilt until it was empowered to so do by a blood sacrifice of an innocent human being. The problem was, having decreed us all to be guilty, the only way this god could think of to get an innocent human being to sacrifice to itself was to pretend to be one and have itself symbolically sacrificed because none of the humans measured up, by definition.
So the Christian festival of Easter is the celebration of this god having itself, as a simulacrum of a human being, sacrificed to itself, so it could acquire the power to remove this assigned guilt from us. Since this is perhaps the central tenet of the Christian superstition, I can't see this being a question any true Christian will have any problem answering.
The question is: how? How did this blood sacrifice empower an already all-powerful god and why was it unable to remove the arbitrary designation of guilt which it had itself imposed, without one.
(Note. An assertion that it did does not explain how it did it.)