[Arthur McGowan]

So the flesh and blood that the Catholic church claims people are eating and drinking is from the RISEN Christ.

Except that flesh and blood does not inherit the kingdom of heaven.

"Flesh" (and "blood") sometimes refer to sinful human nature, deprived of grace. In that sense, "flesh and blood" will not inherit the kingdom of heaven.

Nevertheless, the term "flesh" retains its primary meaning of, simply, flesh--i.e., the body.

The very beginning of Saint John's Gospel tells us that "the Word became flesh, and dwelt among us." Saint John was NOT telling us that Word became "sinful human nature"! He was telling us that the Word became united with a HUMAN NATURE. I.e., the Word became a man.

Since the FLESH or BODY of Jesus that is present in the Eucharist is the same flesh or body or human nature that St. John is referring to when he says "the Word became flesh," obviously the body and blood in the Eucharist are NOT "sinful human nature," but are the sinless human nature of Jesus Christ.

[boatbums]

The law of Moses was unable to save us because of the weakness of our sinful nature. So God did what the law could not do. He sent his own Son in a body like the bodies we sinners have. And in that body God declared an end to sin's control over us by giving his Son as a sacrifice for our sins. (Romans 8:3)

[metmom]

And where is any mention of the blood in that comment?

The blood is what redeems us.