Who is the cup and the loaf?

Therefore, my beloved ones, flee from idolatry. I speak as to men with discernment; judge for yourselves what I say. The cup of blessing that we bless, is it not a sharing in the blood of the Christ? The loaf that we break, is it not a sharing in the body of the Christ? Because there is one loaf, we, although many, are one body, for we are all partaking of that one loaf. Look at Israel in the fleshly sense: Are not those who eat the sacrifices sharers with the altar? What, then, am I saying? That what is sacrificed to an idol is anything, or that an idol is anything? No; but I say that what the nations sacrifice, they sacrifice to demons and not to God; and I do not want you to become sharers with the demons. You cannot be drinking the cup of Jehovah and the cup of demons; you cannot be partaking of “the table of Jehovah” and the table of demons. Or ‘are we inciting Jehovah to jealousy’? We are not stronger than he is, are we?