The Book of Hebrews drives home the point the sacrifice of Christ was perfect and need not be repeated. Christ will NEVER have his blood poured out or his flesh broken again…
For me and many others, that is a strong argument against Transubstantiation.
** RE: John 6, In CONTEXT:**
Then he said, “And the bread that I will give for the life of the world is my flesh” (v. 51).
This sounded like cannibalism. His listeners balked. He pressed it even further:
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. Whoever feeds on my flesh and drinks my blood has eternal life, and I will raise him up on the last day. For my flesh is true food and my blood is true drink (John 6:53-55).
The “Jesus for King” campaign evaporated. The people walked away shaking their heads. The crazy man wants us to eat his flesh! They completely misunderstood what Jesus was saying.
**So what did he mean? Here are the clues: **
How do you labor for the food that endures to eternal life? Believe in me! (v. 27, 29)
“I am the bread of life; whoever comes to me [in faith] shall not hunger, and whoever believes in me shall never thirst.” (v. 35)
“For this is the will of my Father, that everyone who looks on the Son and believes in him should have eternal life, and I will raise him up on the last day.” (v. 40)
“Truly, truly, I say to you, whoever believes has eternal life.” (v. 47)
For Jesus eating is believing; drinking is believing. He promises eternal life to those who believe in him. Believe what?
Believe that his death—the breaking of his body and spilling of his blood—pays in full the penalty for our sin and that his perfect righteousness is freely given to us in exchange for our unrighteousness.
Believing this is how we “eat” Jesus’ flesh and “drink” his blood.
This is why he instituted the Lord’s Supper: he did not want us to forget the very core of what we believe.
When the crowd took offense at his gruesome talk, Jesus exposed their unbelief:
“The words that I have spoken to you are spirit and life. But there are some of you who do not believe” (vv. 63-64).
-desireingGod.org
and these two points:
No where in the Bible do we ever see a miracle performed where the evidence indicated no miracle had taken place. Yet, after the priest performs his super natural act of transubstantiation, the wafer and wine look, taste, smell and feel the same. It has the appearance of a counterfeit miracle because no noticeable change has occurred. When Jesus changed water into wine, all the elements of water changed into the actual elements of wine.
It is stated that the “eating and drinking” in verse 6:54 and the “believing” in verse 6:40 produce the same result - eternal life.
If both are literal we have a dilemma.
What if a person “believes” but does not “eat or drink”? Or what if a person “eats and drinks” but does not “believe?”
This could occur any time a non-believer walked into a Catholic Church and received the Eucharist. Does this person have eternal life because he met one of the requirements but not the other? The only possible way to harmonize the interpretation of these two verses is to accept one as figurative(eating flesh) and one as literal. (believing)