Cut and Paste

Some questions here raised by a protestant I've never really thought of myself. Note that the replies are not from a official apologist, but they do come from senior members who've been posting regularly.

The question:
I'm a Protestant investigating the claims of the Catholic church (honestly looking for the truth, not a fight), and I've run across some Protestant objections (from www.carm.org/catholic) to the doctrine of transsubstantiation that I've not seen addressed elsewhere. They are these:
1. There is no indication that the disciples worshipped the elements.
Now, I know that the Church can claim that the early church fathers believed in transsubstantiation, but why no New Testament mention of worshiping the elements?
2. The supper was instituted before Jesus' crucifixion.
How can Christ give his disciples his real body and blood before he has actually sacrificed himself?
3. The Roman Catholic view is a violation of Levitical law.
Yes, it seems a little picky, but isn't cannibalism and the drinking of blood still a violation of the law, especially considering that the particular dietary stipulation about blood was carried even into the new covenant?
4. It is a violation of the Incarnation.
Apparently, by nature man cannot be omnipresent, and so Christ's body cannot be omnipresent. This seems to be the crux of the argument.
5. The Lord's Supper is not a sacrifice of Christ.
I'll just quote the guy here: "In the Roman Catholic Mass, there is a sacrifice of Christ. In other words, in the ceremonies, is a reenactment and an actual sacrifice of Christ per the Mass. This is an obvious contradiction to the Scriptures which teach us that Christ died once for all and that by the one offering He has perfected for all time those who are sanctified. It does not state in the Word of God that the sacrifice of Christ must be repeated in order to forgive us of our sins or somehow help us to maintain our salvation by the infusion of grace. The fact that Christ died once and the sacrifice occurred once, is proof that it is sufficient to cleanse us of our sins."
How does the Catholic Church counter these arguments? The author of the website writes as though there are no counters, but I just can't imagine that with a 2,000 year history, the Church has never dealt with this.

The shortest reply I read:
John 6:51 - I am the living bread which came down from heaven; if any one eats of this bread, he will live for ever; and the bread which I shall give for the life of the world is my flesh."

John 6:53 - So Jesus said to them, "Truly, truly, I say to you, unless you eat the flesh of the Son of man and drink his blood, you have no life in you;

John 6:54 - he who eats my flesh and drinks my blood has eternal life, and I will raise him up at the last day.

John 6:55 - For my flesh is food indeed, and my blood is drink indeed.

The reply I read (though there are others)
1. The answer to this is to shed your reliance on the unbiblical doctrine of sola scriptura--the false teaching that everything we believe as Christians must be explicitly in Scripture. After this you can see that, just because the Bible doesn't describe the early Christians doing something, doesn't mean they didn't do it. Most of the things they wrote down were in response to some crisis or erroneous teaching going around. The fact they didn't write about eucharistic devotion may only mean it wasn't an issue at that time. On the other hand, if they wrote that it was prohibited, we could not do it. As it stands, they are silent on the issue.

2.The same way he, as God. could maintain the universe and walk the earth at the same time. Jesus is God, never stopped being God, and as God, he is outside of time and space and not restricted by either

3.See the last question on this page:
http://www.catholic.com/thisrock/1995/9505qq.asp

4.Same answer as to question #2 above.
5.The short answer is that Jesus is, according to Hebrews, High Priest forever. As a priest he has to have something to offer forever, or he is not a priest--he is an ex-priest. So what sacrifice does he offer? He offers perpetually the same one he offered once and for all at Calvary. This is the re-presentation of his sacrifice that we participate in at Mass, as we --every Christian ever--are also a nation of priests (1 Peter 2:9) and we have to offer a sacrifice as well.

The long answer can be found here:
http://www.catholic.com/thisrock/1990/9006chap.asp