Blood Protection - was Re: Baptism/Christianity in HP

[Ceridwen]

No: HPFGUIDX 153770

Pippin:
> Not being Christian, I haven't got a dog in this fight. But if 
Lily's sacrifice is
> applicable to the sacrifice of Jesus, then could the point not be 
that the mystical
> protection of her blood works against evil even when it is 
transmitted through so 
> imperfect a vessel as Petunia?

Ceridwen:
Dumbledore sure set store by the same blood running through Lily's 
and Petunia's veins.  McGonagall watched the Dursley house all day 
and was not impressed, to say the least, with them.  We know now that 
McGonagall is a well-thought, well-spoken witch.  Dumbledore must 
have had a very good reason to place Harry there with her censure 
ringing in his ears.

The entire WW is aware of blood.  Who is your ancestor?  All of 
that.  I keep returning to the idea that there is some mystical thing 
through relation, through blood.  Not genetic, we've been over WW 
genetics, and that just makes my head hurt.  But at the same time, 
real connections - the Malfoys and the Weasleys are related, but they 
don't get along - don't show anything of the sort.

So, Lily's sacrifice, plus Petunia's having Lily's blood, equals 
protection.  I've read that Dumbledore must have done some spellwork 
during that missing day to ensure Harry's protection with the 
Dursleys, but I've often wondered if these spells if any are 
amplified by the relationship.  It seems so to me, but then, you know 
how things that seem so obvious to one reader are completely absent 
for another.  Going against the idea of blood mattering is the fact 
that wizards who are related, Weasleys and Malfoys for instance, 
simply don't get along.  And, of course, the Dursleys don't seem to 
like Harry very much, either, though they aren't WW people.

(Could Petunia, because of having a witch for a sister, be more bound 
than another Muggle who has no such relationship with the WW?)

So I think it has to be some very deep, arcane sort of magic, a 
natural magic that doesn't manifest in everyday interactions.  This 
is how I'm taking it.  Does anyone else have ideas?

Ceridwen.