Like, how much holy does a mist of water need to cause vampire damage?
Also pondering: what is the range of blessing water? Can a person bless a whole ocean? How much holy energy does a priest need to create true holy damage? Is "holy" in the mind of the beholder, like a business man seeing money as their God and uses a Benjamin as their holy symbol?
Is holiness dilutable? Like, if there's insufficient holiness for a given body of water to be considered pure holy, does the holy dilute into a less holy form? Would it still be considered holy water if you have nothing but the diluted stuff? Is there a limit to how much holy a body of water can contain?
You joke but the Catholic canon says that to check if someone is saint you have to pray to him and if miracle happens it means that this person can talk to god because only god can do miracles. And since he can talk to god it means he's in heaven so his a saint. They actually have a pretend 'scientific method' they use for beatifications.