The readings today take great pains to reinforce a particularly important type of reality. When we think of real, we often think, or many people think, of the scientific world, based upon observation and fact. And while this is a good and noble way to learn about truth, the way things are, it is not the only way. There is another type of reality, a way of seeing that equally seeks the truth. And often these truths are the higher level truths, because they are the truths that do not rest on human reason (though they are reasonable) but upon the spiritual revelation of God which is always real and true, and will always be real and true.
What we celebrate today is just such a truth. There is with the Eucharist what we see — the host and the wine — and what is really and truly present, the Body and Blood of Christ. To drive home this point, the gospel of John uses really down to earth terms. Real terms. Which causes the listeners to be quite perplexed as to what Jesus means. John uses the word flesh, not just a symbol of the flesh, or a sign, or a recreation, but rather something real and true. So today, receive Jesus, body and blood, soul and divinity, at Mass.