Great post - a keeper. Thanks. :)
In a fifth-century homily, Theodore of Mopsuestia seemed to be speaking to today’s Evangelicals and Fundamentalists:
“When [Christ] gave the bread he did not say, ‘This is the symbol of my body,’ but, ‘This is my body.’ In the same way, when he gave the cup of his blood he did not say, ‘This is the symbol of my blood,’ but, ‘This is my blood,’ for he wanted us to look upon the [Eucharistic elements], after their reception of grace and the coming of the Holy Spirit, not according to their nature, but to receive them as they are, the body and blood of our Lord” (Catechetical Homilies 5:1).
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Whatever else might be said, the early Church took John 6 literally. In fact, there is no record from the early centuries that implies Christians doubted the constant Catholic interpretation. There exists no document in which the literal interpretation is opposed and only the metaphorical accepted.
Why do Fundamentalists and Evangelicals reject the plain, literal interpretation of John 6? For them, Catholic sacraments are out because they imply a spiritual reality—grace—being conveyed by means of matter. This seems to them to be a violation of the divine plan. For many Protestants, matter is not to be used, but overcome or avoided.
One suspects, had they been asked by the Creator their opinion of how to bring about mankind’s salvation, Fundamentalists would have advised him to adopt a different approach. How much cleaner things would be if spirit never dirtied itself with matter! But God approves of matter—he approves of it because he created it—and he approves of it so much that he comes to us under the appearances of bread and wine, just as he does in the physical form of the Incarnate Christ.
http://www.catholic.com/library/Christ_in_the_Eucharist.asp
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http://www.catholic.com/library/Christ_in_the_Eucharist.asp