http://www.unamsanctamcatholicam.com/apologetics/87-eucharistic-apologetics/240-flesh-in-john-6.html

Excerpt from link above:

It is this language that arouses murmuring from the Jews about its meaning, and rightfully so; at this point, our Lord is using language that is somewhat symbolic and could be interpreted any number of ways. He has yet to clarify His meaning. Our Lord will go on to clarify His statement with an even more shocking assertion:

“I am the living bread that came down from heaven; whoever eats this bread will live forever; and the bread that I will give is my flesh for the life of the world.” (John 6:51)

This is the first time our Lord mentions His flesh in this discourse, and the word He uses for “flesh” is sarx (σάρξ). This word sarx is typically used to denote real, physical flesh. Strong’s Concordance (a Protestant book, remember), defines sarx as, “flesh (the soft substance of the living body, which covers the bones and is permeated with blood) of both man and beasts.” Sarx can occasionally mean simply body in a generic sort of way, but the Greek has another word for body: soma. The word soma is used for body in the Synoptic Gospels at the Last Supper, as well as in 1 Corinthians 10. Yet here, when the Jews are looking for our Lord to clarify His meaning on how He is the Bread of Life, He chooses the word sarx, which is a more univocal term and denotes physical flesh. Our Lord seems to be insisting on a literal interpretation.

But interestingly enough, in John 6:54 Jesus switches the verb He uses to represent the concept of eating. Instead of the broad, equivocal term phago, He changes to the very pointed term trogon. Trogon (τρώγω), unlike phago, has one very, specific, literal meaning: to gnaw, crunch or chew. It is a univocal term with a single meaning. When our Lord begins to use trogon for “eat” in John 6:54, He is removing the last kernel of doubt from His listeners as to the proper interpretation of His words. The proper English equivalent of trogon would be masticate, which is the scientific term for the act of chewing and is unambiguous.

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Blessings
Chris

Thank you.

Time for reflection and recharging is so important, especially in today’s culture when work wants us to constantly be connected. After 3 very hectic weeks at work, today I’m on vacation. Your words struck home reminding me that I need to leave the computer off and recharge my battery today.

Happy Mothers’ Day to all mothers.

Happy Mother’s Day – may God give you strength each and every day to guard and protect those little ones He has entrusted to your care. God bless you on this Good Shepherd Day.