trogo tro'-go: to gnaw or chew, i.e. (generally) to eat -- eat." b.) if Jesus is speaking about a literal reality then we must recognize that in the Old testament if you did not eat the sacrifice you did not find forgiveness. c.) Paul makes this same connection in 1 Corinthians 10:16-20 "1 Corinthians 10:16-20New International Version (NIV)
16 Is not the cup of thanksgiving for which we give thanks a participation in the blood of Christ? And is not the bread that we break a participation in the body of Christ? 17 Because there is one loaf, we, who are many, are one body, for we all share the one loaf.
18 Consider the people of Israel: Do not those who eat the sacrifices participate in the altar? 19 Do I mean then that food sacrificed to an idol is anything, or that an idol is anything? 20 No, but the sacrifices of pagans are offered to demons, not to God, and I do not want you to be participants with demons." So go ahead and deny the eucharist but in so doing you draw questions to the meaning of the cross and the incarnation