Kelly and I have done John 6 at great length in the past and you can find those here.
It is wonderful that God rained manna on our fathers and they were fed with daily food from heaven. And so it is written: Man ate the bread of angels. Yet those who ate that bread all died in the desert. But the food that you receive, that living bread which came down from heaven, supplies the very substance of eternal life, and whoever will eat it will never die, for it is the body of Christ. Ambrose of Milan, treatise On the Mysteries was originally spoken to newly baptized Christians around the year 370 AD.
This quote is apparently referring to John 6. I would like to give a few scriptures to show why Jesus in John 6 is not referring to Christ literally giving us His body and blood to eat, and that the bread is not literally the 'body, soul, and divinity of Christ' or the whole Christ.
Matthew 24:23 “Then if anyone says to you, ‘Look, here is the Christ!’ or ‘There!’ do not believe it. 24 For false christs and false prophets will rise and show great signs and wonders to deceive, if possible, even the elect. 25 See, I have told you beforehand.
26 “Therefore if they say to you, ‘Look, He is in the desert!’ do not go out; or ‘Look, He is in the inner rooms!’ do not believe it. 27 For as the lightning comes from the east and flashes to the west, so also will the coming of the Son of Man be.
This passage says that if anyone tells you that Christ is here or there on earth DO NOT BELIEVE IT and DO NOT GO OUT to look for Him, because His coming will be 'as the lightning come from the east and flashes to the west'.
John 19:30 He said, “It is finished!” And bowing His head, He gave up His spirit.
Hebrews 10:16 “This is the covenant that I will make with them after those days, says the LORD: I will put My laws into their hearts, and in their minds I will write them,” 17 then He adds, “Their sins and their lawless deeds I will remember no more.” 18 Now where there is remission of these, there is no longer an offering for sin.
Jesus finished His propitiatory work on the cross and for those who believe in Him, their sins are forgiven and there is no more need for an offering for sin.
Hebrews 9:25 not that He should offer Himself often, as the high priest enters the Most Holy Place every year with blood of another— 26 He then would have had to suffer often since the foundation of the world; but now, once at the end of the ages, He has appeared to put away sin by the sacrifice of Himself. 27 And as it is appointed for men to die once, but after this the judgment, 28 so Christ was offered once to bear the sins of many. To those who eagerly wait for Him He will appear a second time, apart from sin, for salvation.
This passage says that He appeared once to put away sin by His sacrifice of Himself, not often, and that He will appear for those who eagerly await Him a SECOND TIME, APART FROM SIN, for salvation. He will appear a second time when He comes back to earth, 'just as He ascended' the first time. He will appear 'apart from sin' that is, not as a sacrifice for sin. He does not come back as a physical perpetual sacrifice. Every word of Hebrews denies this doctrine. He sat down at the right hand of the Father in victory over sin and death and having finished His suffering, He intercedes for us against our accuser the devil.
Let's look at Matthew 24 in it's entirety. I will emphasize some parts I want to use to make a point.
Signs of the End of the Age1Jesus left the temple and was walking away when his disciples came up to him to call his attention to its buildings. 2"Do you see all these things?" he asked. "I tell you the truth, not one stone here will be left on another; every one will be thrown down." 3As Jesus was sitting on the Mount of Olives, the disciples came to him privately. "Tell us," they said, "when will this happen, and what will be the sign of your coming and of the end of the age?"
4Jesus answered: "Watch out that no one deceives you. 5For many will come in my name, claiming, 'I am the Christ,[a]' and will deceive many. 6You will hear of wars and rumors of wars, but see to it that you are not alarmed. Such things must happen, but the end is still to come. 7Nation will rise against nation, and kingdom against kingdom. There will be famines and earthquakes in various places. 8All these are the beginning of birth pains.
9"Then you will be handed over to be persecuted and put to death, and you will be hated by all nations because of me. 10At that time many will turn away from the faith and will betray and hate each other, 11and many false prophets will appear and deceive many people. 12Because of the increase of wickedness, the love of most will grow cold, 13but he who stands firm to the end will be saved. 14And this gospel of the kingdom will be preached in the whole world as a testimony to all nations, and then the end will come.
15"So when you see standing in the holy place 'the abomination that causes desolation,'[b] spoken of through the prophet Daniel—let the reader understand— 16then let those who are in Judea flee to the mountains. 17Let no one on the roof of his house go down to take anything out of the house. 18Let no one in the field go back to get his cloak. 19How dreadful it will be in those days for pregnant women and nursing mothers! 20Pray that your flight will not take place in winter or on the Sabbath. 21For then there will be great distress, unequaled from the beginning of the world until now—and never to be equaled again. 22If those days had not been cut short, no one would survive, but for the sake of the elect those days will be shortened. 23At that time if anyone says to you, 'Look, here is the Christ!' or, 'There he is!' do not believe it. 24For false Christs and false prophets will appear and perform great signs and miracles to deceive even the elect—if that were possible. 25See, I have told you ahead of time.
26"So if anyone tells you, 'There he is, out in the desert,' do not go out; or, 'Here he is, in the inner rooms,' do not believe it. 27For as lightning that comes from the east is visible even in the west, so will be the coming of the Son of Man. 28Wherever there is a carcass, there the vultures will gather.
29"Immediately after the distress of those days
" 'the sun will be darkened,
and the moon will not give its light;
the stars will fall from the sky,
and the heavenly bodies will be shaken.'[c]
30"At that time the sign of the Son of Man will appear in the sky, and all the nations of the earth will mourn. They will see the Son of Man coming on the clouds of the sky, with power and great glory. 31And he will send his angels with a loud trumpet call, and they will gather his elect from the four winds, from one end of the heavens to the other.
32"Now learn this lesson from the fig tree: As soon as its twigs get tender and its leaves come out, you know that summer is near. 33Even so, when you see all these things, you know that it[d]is near, right at the door. 34I tell you the truth, this generation[e] will certainly not pass away until all these things have happened. 35Heaven and earth will pass away, but my words will never pass away.
The Day and Hour Unknown36"No one knows about that day or hour, not even the angels in heaven, nor the Son,[f] but only the Father. 37As it was in the days of Noah, so it will be at the coming of the Son of Man. 38For in the days before the flood, people were eating and drinking, marrying and giving in marriage, up to the day Noah entered the ark; 39and they knew nothing about what would happen until the flood came and took them all away. That is how it will be at the coming of the Son of Man. 40Two men will be in the field; one will be taken and the other left. 41Two women will be grinding with a hand mill; one will be taken and the other left.
Jennie is trying to say that we can't refer to the Eucharist Jesus Christ because of this passage. I say she has totally misinterpreted it. What Jesus clearly referring to in this passage is to be aware of false prophets who are claiming to be him. Clearly the Eucharist does not proclaim itself verbally, "I am the Christ." Christ's verbal silence in the Eucharist is part of His power - the power of just being, of being "I Am." So Matthew 24:4 does not refer to the Eucharist in any way shape or form and it's a mighty stretch to try to connect it. Also Matthew 24:26 again refers to a false Christ claiming to be in the desert, or the upper room, or could be the street corner or the stadium or stage. But the Eucharist is present only in a very specific holy place- in the tabernacle of a Catholic church being distributed by the church or in hospitals, nursing homes, prisons etc. by specially trained ministers of the Eucharist. Matthew 24 doesn't cut it for disproving the Eucharist either.
And I can't resist just saying Christ does say we do not know the hour or the day. I feel sorry for Christians who spend so much time and energy worrying about it. Be like the birds of the field or like a little child and don't worry about things that you can't control anyway.
Now let's look at Jennie's other passage in context.
The Blood of Christ11When Christ came as high priest of the good things that are already here,[b] he went through the greater and more perfect tabernacle that is not man-made, that is to say, not a part of this creation. 12He did not enter by means of the blood of goats and calves; but he entered the Most Holy Place once for all by his own blood, having obtained eternal redemption. 13The blood of goats and bulls and the ashes of a heifer sprinkled on those who are ceremonially unclean sanctify them so that they are outwardly clean. 14How much more, then, will the blood of Christ, who through the eternal Spirit offered himself unblemished to God, cleanse our consciences from acts that lead to death,[c] so that we may serve the living God! 15For this reason Christ is the mediator of a new covenant, that those who are called may receive the promised eternal inheritance—now that he has died as a ransom to set them free from the sins committed under the first covenant.
16In the case of a will,[d] it is necessary to prove the death of the one who made it, 17because a will is in force only when somebody has died; it never takes effect while the one who made it is living. 18This is why even the first covenant was not put into effect without blood. 19When Moses had proclaimed every commandment of the law to all the people, he took the blood of calves, together with water, scarlet wool and branches of hyssop, and sprinkled the scroll and all the people. 20He said, "This is the blood of the covenant, which God has commanded you to keep."[e] 21In the same way, he sprinkled with the blood both the tabernacle and everything used in its ceremonies. 22In fact, the law requires that nearly everything be cleansed with blood, and without the shedding of blood there is no forgiveness.
23It was necessary, then, for the copies of the heavenly things to be purified with these sacrifices, but the heavenly things themselves with better sacrifices than these. 24For Christ did not enter a man-made sanctuary that was only a copy of the true one; he entered heaven itself, now to appear for us in God's presence. 25Nor did he enter heaven to offer himself again and again, the way the high priest enters the Most Holy Place every year with blood that is not his own. 26Then Christ would have had to suffer many times since the creation of the world. But now he has appeared once for all at the end of the ages to do away with sin by the sacrifice of himself. 27Just as man is destined to die once, and after that to face judgment, 28so Christ was sacrificed once to take away the sins of many people; and he will appear a second time, not to bear sin, but to bring salvation to those who are waiting for him.
This passage explains why it was necessary for Christ to become the new sacrifice and why we refer to Him as the Lamb of God. And with Christ's sacrifice comes the new covenant. Catholics know this and we do not re-sacrifice Christ over and over again. Instead we take part of the ever-living sacrifice that is once and for all and not bound by time and space.
Incidentally this is what St. Paul also taught:
Paul wrote to the Corinthians: "The cup of blessing which we bless, is it not a participation in the blood of Christ? The bread which we break, is it not a participation in the body of Christ?" (1 Cor. 10:16). So when we receive Communion, we actually participate in the body and blood of Christ, not just eat symbols of them. Paul also said, "Therefore whoever eats the bread and drinks the cup of the Lord unworthily will have to answer for the body and blood of the Lord. . . . For any one who eats and drinks without discerning the body, eats and drinks judgment on himself" (1 Cor. 11:27, 29). "To answer for the body and blood" of someone meant to be guilty of a crime as serious as homicide. How could eating mere bread and wine "unworthily" be so serious? Paul’s comment makes sense only if the bread and wine became the real body and blood of Christ.
I think it is pretty clear that Matthew 24 has been totally misinterpreted as well as Hebrews. Bible believing Christians really need to quit looking for ways to avoid it and consider that when Christ says, "This is my body," he actually meant it!
Update: Jennie blogged on this too.