Even more interesting coincidence, in an older work, a Jewish deity called Yahweh likes blood strewn about the altar.
Animal blood. The Jews often lapsed into animal worship. This was the Lord's cure.
Note that cultures contemporary to the Jews often performed infanticide or human sacrifice, unlike the Jews. That is the lesson of the story of Abraham and Isaac, of which you seem to be conveniently ignorant.
Unlike you or I, this deity couldn't forgive sins without a murder being committed, either of the sinner or some substitute. Didn't have to be human.
God couldn't forgive a man's sins unless the sinner was killed? Or do you mean that a sinner could not be forgiven unless a human was sacrificed? You may be reading Aztec history.
God did require the sacrifice of animals in the Old Testament for the reasons stated above, and also as a form of penance, which shouldn't be problematic unless you're a member of PETA.
Anyways, in this morally appalling work, which has a human sacrifice as it's culmination, his thirst was finally quenched on his own son's blood.
You mislead by separating God the Father from the Son. They are separate Persons in the same Substance. God redeems us by sacrificing Himself in the ultimate act of love.
Notice that the obscene self-mutilation in Harry Potter is an attempt to gain power, as is the real life mutilation described in this article.
But as you continue to omit, it's the evil one trying to gain power by the drinking of the blood. It is clearly presented as evil in both the book and the movie.
What self-mutilation scene? Not challenging you, I've never picked up a Harry Potter book (and don't want to) - just want to know what you're referring to.
It's a technicality, and at least your not quoting The Onion but when Wormtail (previously known as Scabbers the rat) cuts his arm off it is for a ritual that will return bodily form to Voldemort (the evil one for non HP readers). Wormtail is being controlled by his master Voldemort when he cuts off his own arm. So it's not really "self mutilation" or an attempt by the doer of the deed to "gain power."
I know it's picky, and I know it will do nothing to change your position (it may even enhance it). But there's enough disinformation going around about what is in the books, so I like to clear things up when I can.