I've been thinking about the very basic concept of Christianity, which is bread and wine.
It is very puzzling because if you think deeply it is hard to understand why exactly these and why it is "flesh and blood" of the lord.
while reading some judaic writings, Bereishit in particular, I've found two places which hint at the answer - first, when Abram gave bread and water to Rebecca who went to wander to Beer Sheva
second, when Sodom and Gomorrah were destroyed and the most obvious reason of this was their lack of hospitality and basic respect to people, which included giving food and shelter to those from outside
so, linking it all together the puzzle seems to be somewhat getting shape
@Rilakkuma You mean the basic concept of communion? The basic concept of Christianity is believing that Jesus Christ died and rose again for our sins so that we, through Him, can come to God (salvation). Or if you mean the basic commandments it would be number one to love the Lord, our God with all our heart and soul, and second to love our neighbours as ourselves.
@Rilakkuma Yes, it is puzzling. However, bread and wine/grape juice symbolizes the Body and Blood of Jesus Christ because He said so. I have not yet traced it's types (if there are any) in the OT.
@Zoe: When you kill an animal, you have both blood and flesh... and there were specific Jewish rules on what to do with both during sacrifice. The bread and wine replaced those symbols.
@laovultai Here's all references to you in this chat. I don't see that there, but, of course, someone may have said something to you without actually using your name.