The Faith Explained – Page 350
“On this, the last night before His death, Jesus is making His last will and testament.
Ibid. Page 351
A last will is no place for figurative speech (in the Catholic opinion); under the best of circumstances (human) courts sometimes have difficulty in interpreting a testator’s intentions aright, even without the confusion of symbolic language. Moreover, since Jesus is God, He knew that as a result of His words that night, untold millions of people would be worshipping him through the centuries under the appearance of the bread. if he would not really be present under those appearances, the worshippers would be adoring a mere piece of bread, and would be guilty of idolatry,. Certainly that is something that God Himself would set the stage for, by talking in obscure figurative speech.
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IF Jesus was using a metaphor; if what He really meant was, “This bread is a sort of SYMBOL of My Body, and this is a SYMBOL of My Blood (not yet spilled – so they were not then participating in sacrifice); hereafter, any time that My followers get together and partake of the bread and wine like this, they will be honoring Me and representing My death”; if that IS what Jesus meant (as many protestants claim), then the apostles got Him all wrong (in the Catholic option here). And through their misunderstanding (can the Catholic document blame the Apostles instead of the Catholic church’s tradition that interjects this RC heresy?), mankind has for centuries worshiped A PIECE OF BREAD as God”