Reading over Grandma's post, all he said was a true statement. Drinking the blood of Jesus
is a Christian tradition. Just because it is one, does not mean that it is believed or practiced by all groups, churches or followers, simply that it is a tradition that is practiced by Christians. If that clarifies anything, sometimes a misunderstood message can leave you feeling offended by something.
Either way, your post is turning this discussion into something that breaks the AUP, your post itself breaks the AUP, so if not for other people, edit your post for your own sake, if a mod feels it necessary they'll enforce the rules. There is a reason why political and religious discussion is not allowed.
However, I am one for religious debate and it sounds like you want to say something, I am always intrigued by other people's religious views, so if you want to take this somewhere else, then say so and then I'll link you onto my website's forums to discuss them and anybody else is welcome to do so as well - just to keep this away from these forums, thought of course there's two requirements, views ought to be respected and things to be done maturely.