So often what began happening at least in the late renaissance period is that once Calvin and Zwingli decided that Rome's tradition was not a crucial (not to mention infallible) authority for them anymore, they took a different, independent, more naturalistic look at the Eucharist food than what the traditions had been saying to them in their era. They were disillusioned with Catholic incidents of Eucharist wine on rare occasion turning into observable physical "blood". So when they went back to read the passages, Calvin and Zwingli decided that the communion food could not have Jesus specifically in it, because that's impossible. But the Lutherans, "high church" Anglicans, Orthodox, and Catholics proposed that Jesus was directly and specifically in the Eucharist bread, and that his body actually was on the church altar table. This is not to get into the Transubstantiation vs. Consubstantiation debate, nor does this prove that in the real world the bread actually has Jesus' carnal body in it.
The problem with Calvin's logic is that back in the 1st century, Christians were believing in supernatural miracles and phenomena that mainstream Protestants in the modern period have begun to be much more skeptical about (eg. "real" demon and angel beings).
So what are the best arguments that could be made from the text alone that Jesus is specifically in the Communion food according to the early Christians' beliefs?
1. Jesus said to have the communion ritual in his memory, and remembrance in 1st century Judaism/Christianity meant to mystically make something present.
2. The Bible said that it was his body, but never specified that it was only meant symbolically.
3. When he says "this is my body", he is pointing to a specific, real object, not just talking theoretically giving names for things, like Jesus being called symbolically a "rock" or "lamb". When he spoke of the restoration of the temple and meant his body, he was indicating his body and did not use his body's restoration symbolically. Nouns like lamb, rock, or vine might be symbolic, but the verb "is" does not mean "signifies. This was Luther's similar reasoning, saying that the word "is" does not mean "signfies".
4. In John 6 Jesus repeated that disciples would have to eat his body, but never added that it was just a metaphor. And many disciples argued with him about this and left him over it, but he didn't stop them by saying that it was just a metaphor. He could have stopped his disciples from leaving if they had the wrong idea, but he didn't.
5. In 1 Cor 10-11, Paul says "Judge(KRINATE) what I say... Is not the bread the communion of Christ's body?" Then in the next chapter he repeats Jesus' words that what he gave to the disciples is his body, then Paul says that people suffer if they don't discern(KRINATE) the body. By using the same word Krinate, it shows that he is talking about the same thing in what needs to be judged. Paul was complaining that people were not actually seeing the food as the body or communion of the body.
6. Jesus said "This is my body", not "This bread is my body". Why the omission unless it is inferring the miracle change in the food?
7. Paul wrote in 1 Corr 11 that failing to take the body unworthily brought on real harm, like sickness. But in the Calvinist view (Receptionism) or memorial-only view, only a person who takes it with faith achieves communion with Jesus' body that in the Calvinist view is only up in heaven. In the Calvinist view, the body is not on the table and is not actually eaten in the mouth. But if Receptionism is correct, how is it that the person who takes it unworthily could suffer sickness, if they never actually made contact with Jesus?
8. It says that if the person takes it unworthily they are guilty of Jesus' body and blood. If Receptionism were correct, how could that be true, since unbelievers would not make contact with Jesus' body?
9. If the bread is only a symbol, then it what way do unbelievers fail to discern it? Even an unbeliever can tell that in the ritual the bread is treated as a symbol of Jesus' body, just like they can tell that the Christian cross on a wall is a symbol of Jesus' cross.
10. Theoretical possibility: Luther's explanation was that if Jesus was in the wall or passed through it in John 20, then Jesus was impaned in the bread in the same way. He proposed that Jesus' body was there in spirit form. Jesus' body had gone through transformation / transfiguration to where this was possible. The idea of bilocation was also conceivable to the mystical mindset, whereby Jesus' body could be in two places at once. Einstein proposed that matter could bilocate. And in Corinthians, Paul talked about Christians getting a post-resurrection spirit body.
11. Jesus' use of the word chew in John 6:
http://equippinggodlywomen.com/faith/is ... ment-14933What you DON’T notice when reading the passage above [John 6] is that when Jesus talks about eating, he is actually using two separate verbs. At first, he uses the Greek word “phagon” which is the normal Greek word for “to eat.” Part way through the passage, however, he suddenly switches to the word “trogon,” which literally means to crunch or gnaw.
Jesus wasn’t telling them to “partake” or “consume.” He was saying they literally had to crunch, gnaw or chew. (Kind of hard to “crunch” on a symbol… but you can try!) Furthermore, the tense of the word “trogon” implies that this is an action that will take place continuously over time–not as a one-time event.
12. If as Reformed say, the phrase in John 6:63 is (the flesh profits nothing) literal about the flesh, then earlier in John 6 "the flesh" is literal, when it repeats many times things like "4 Whoever eats My flesh and drinks My blood has eternal life".
13. When people couldn't handle the thought of eating Jesus and they left Jesus over it, Jesus' conclusion was that they wouldn't believe in a miracle like the ascension either. This reflects that the nature of their objection was materialistic and that they, in their materialism, would not accept the Ascension either, as it went against materialism in the same way.
http://www.catholicfaithandreason.org/a ... arist.htmlHe goes on to state that these people who witnessed his many miracles, even if they see Him rising to the Father at His ascension, they would not believe. "What if you see the Son of Man ascend where He was before!" Miracles do not guarantee belief.
Can you think of more arguments from the text?
Objections
1. A common objection is that Jesus added in John 6 that "the spirit gives life but the flesh profits nothing". But if 1 Cor 11 is read to teach the real presence in the food, then this verse in John 6 would be in agreement: 1 Cor 11 says that eating the communion food did not necessarily profit, it was only when done so worthily. Unworthy eating of the bread, he said would not profit one and indeed would be harmful. Thus, the spirit directly benefits the person, but the bread itself was not profiting, it would be only when eaten worthily that the bread with Jesus in it could lead to benefit. Just eating the physical food or flesh does not profit, it's when done so in faith and with right spirit. Further, John 6 never says that Jesus' body or flesh doesn't profit people, because in Christian thinking, Jesus' flesh actually does profit them in the Atonement. Therefore, the verse in John 6 above can't be read categorically.

'So what?'
If it's true that the Bible says that Jesus is specifically in the bread, this calls into question much of the Reformed "early modern", "realistic" approach to reading the Bible. One approach is to say that the stories about demons and angels and miracles are only meant as metaphors. Zwingli's idea that the Eucharist was only a metaphor is a good example of how this approach started. If someone doesn't believe that angels are real beings or that Jesus can be in the bread, then the temptation exists to read these as only metaphors. However, it looks like in the Bible times, people really did believe in these kinds of phenomena as both conceivable and realistic. Just because under "early modern"/late renaissance 16th science this would not occur does not meant that it was intended this way.
It looks like what happens is that Reformed Protestants find it impossible to conceive that Jesus could actually be in the bread, therefore they conclude that the text did not say this. Calvin called it "incredible" and others tell me that it goes against the very definition (as they conceive of it) of a "body". However, if it could be proven that the text does say this, would that create a dilemma for them?