Interesting interpretation of the non-symbolic nature of the Eucharist:
Paul tells us in 1 Corinthians 5:7-8, "Christ our Passover lamb has been sacrificed, therefore" - what? - we don't need to have any more sacrifice? Therefore we don't need to have any more ritual, therefore all we have to do is have a personal relationship with Jesus Christ and invite him into our hearts and everything else is taken care of? No, he's too knowledgeable about the Old Testament to say any of that. He says, "Christ our Passover lamb has been sacrificed; let us therefore celebrate the feast." What feast? The whole Passover feast. It's not complete yet. What do you mean?
Well, go back to the Old Testament, to the book of Exodus. Suppose that night as head of my household and father, I sacrificed an unblemished lamb with no broken bones, and I sprinkled his blood on the door post, and then I said, "Family, we're safe, let's go to bed', and we went to bed. I'd wake up in the morning to tragedy. My firstborn would be dead. Why? You had to eat the lamb. It isn't enough to kill him. That is the satisfaction for sin, but the ultimate goal of sacrifice is not blood and gore and God making sure He sees the death. The ultimate goal is to restore communion, to have fellowship with God restored. And that's what's signified by eating the lamb. Who shares a common meal? Family. What is this a sign of? Covenant. And what is a covenant? A sacred family bond. In the Old Testament any family that sacrificed a lamb and sprinkled the blood had to eat the lamb. It wasn't enough to say, 'Well we don't like lamb do we, kids? Why don't we make lamb cookies? Little lamb wafers that symbolize the lamb? We'll eat those and those'll be enough, right? Symbolic presence of the lamb, and all that?' No, you'd wake up and you'd be dead. You ate the lamb and you burned what was left. But you ate the lamb to reestablish and restore communion with your heavenly Father through His firstborn Son and Lamb. That's the way it was in the Old Testament, and St. Paul recognizes that it's still the way it is in the new covenant, only in spades, only with more glory.