If we did scientific tests on the very living body of Jesus Christ (at any point, though the analogy is easiest to imagine during Christ’s initial incarnated life before the Resurrection), we would surely find that he is human in all respects, correct?
Then why would we not find that, in the Bread and Wine, we find Bread and Wine, even though it is really him, just as Christ’s Body is really human?
Also, “consubstantiation” seems to imply that Jesus does not dignify physical, material things with his presence (despite the Incarnation), and that he keeps himself hidden from us, subordinated under physical things, as if he is an illusion. Whereas, just as in the Incarnation, the reality is that Christ is no illusion; he actually comes into, becomes the physical, physically present, meeting us in all of our humanity, body and soul.
In taking this Christ made flesh in the bread and wine, he comes into us physically and we in-corp-orate him into us, his body becoming ours, we becoming physically and real-ly part of his Body. How in any other way can we have eternal life than by becoming one with the only eternal, resurrected body living (Christ)? This is the meaning of John 6–unless we eat his eternal body and drink his eternal blood (and let the Incarnate God come into us and live through us in place of and in union with us) can we have eternal life.