What on earth are you talking about? You quote it yourself: "The cup of blessing that we bless, is it not a participation in the blood of Christ? The bread that we break, is it not a participation in the body of Christ?
"Absence of information?"
And what does it mean to eat without discerning the body? Just before that verse, we find:...
. Huh?
[27] Wherefore whoever shall eat this bread, and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord. [28] But let a man examine himself, and so let him eat of that bread, and drink of that cup. [29] For he that eateth and drinketh unworthily, eateth and drinketh damnation to himself, not discerning the Lord's body. ... [31] For if we would judge ourselves, we should not be judged.
Your exegesis flatly contradicts the Apostle Paul.
“What on earth are you talking about? You quote it yourself: “The cup of blessing that we bless, is it not a participation in the blood of Christ? The bread that we break, is it not a participation in the body of Christ?”
Chapter 10 starts with talking about how Israel was an example to us: “These things happened to them as examples and were written down as warnings for us, on whom the fulfillment of the ages has come.” Because of what we learn from Israel’s example, we are to flee idolatry - verse 14.
Now follows verses 15-24:
“I speak to sensible people; judge for yourselves what I say. Is not the cup of thanksgiving for which we give thanks a participation in the blood of Christ? And is not the bread that we break a participation in the body of Christ? Because there is one loaf, we, who are many, are one body, for we all partake of the one loaf.”
[When we participate in the Eucharist, we are one body. Is this because the bread and wine are literally the flesh and blood of Jesus? Consider what he says now about idols...]
“Consider the people of Israel: Do not those who eat the sacrifices participate in the altar? Do I mean then that a sacrifice offered to an idol is anything, or that an idol is anything? No, but the sacrifices of pagans are offered to demons, not to God, and I do not want you to be participants with demons.”
[When someone eats the sacrifice that was offered to an idol, he participates with demons. It isn’t that the sacrifice - meat, vegetable, whatever - is transubstantiated into the flesh of a demon (”Do I mean then that a sacrifice offered to an idol is anything, or that an idol is anything? No”), but that those who take the Eucharist are identified with Christ, and those who partake of food offered to idols are identified with demons.]
“You cannot drink the cup of the Lord and the cup of demons too; you cannot have a part in both the Lord’s table and the table of demons.”
“Are we trying to arouse the Lord’s jealousy? Are we stronger than he? “Everything is permissible”—but not everything is beneficial. “Everything is permissible”—but not everything is constructive. Nobody should seek his own good, but the good of others.”
Participation in the blood of Christ does not equal drinking the actual blood of Christ, any more than eating food sacrificed to idols is eating the actual flesh of a demon.
For more discussion on the context, please read what I posted here:
http://www.freerepublic.com/focus/religion/2393858/posts?page=1394#1394
It is 2:30 AM here, and I’m only up now to drink a bit of juice to clear my throat out as I try to get over this cold.