Hi Truthstalker,
I liked your question and sent it on for a friend of mine to reply to. His reply below.
I have this wild thought that I would like to tie down, and it is that the doctrine of transubstantiation is a direct result of the theology of the incarnation: the way God the Son became man is expressed similarly in what happens during the Eucharist, and, correspondingly, how we view what happens in the Eucharist is how we view the doctrine of the incarnation.
This is very true. The Eucharist is the Incarnation of Jesus Christ made present in our midst, and given to be received (again and again) into our own bodies (per John 6:56). Essentially, the mystery works like this: Christ is the Bridegroom and the Church is His Bride --the two sharing a one-Flesh Covenant relationship (see: Ephes 5:25-32). Because the Church is the Bride of Christ, with Whom she shares a one-Flesh Covenant, the Church is therefore also the Body of Christ (per 1 Corinth 12); for Bridegroom and Bride are not two, but one Flesh: one Body. This is why, for example, when Christ appears to Saul (St. Paul) in Acts 9, He does NOT say, “Saul, Saul, why are you persecuting MY CHURCH?” Rather, He says, “…why are you persecuting ME?” That is the nature of the relationship between Christ the Bridegroom and His Bride, the Church. Well, the Eucharist is the point at which Bridegroom and Bride share a one-Flesh intimacy …just like a husband and wife in intercourse. This is why Jesus chose to give us Himself in the course of a human meal --because the most intimate thing that people can do together in a group is to share a meal with each other. And so, Jesus establishes the one-Flesh Covenant in the course of a meal (His Last Supper …His Eucharist). And, in the Eucharist, Christ gives Himself to us totally and completely (Body, Blood, Soul, and Divinity), and we give ourselves (reaffirming our Covenant commitment) to Him. And, in celebrating the Eucharist, the Church is reaffirmed and re-established as the Body of Christ --that is, a mysterious extension of the Lord’s own Incarnation in the world today. This is what Jesus primarily means when He says “I will be with you always, until the end of the age.” The Presence of Christ in the Church is not merely spiritual, but both spiritual and Incarnational --that is, in the consecrated Blessed Sacrament (the Eucharist) and then, by extension and communion, in us, His disciples, provided that we remain in a state of grace --that is, provided that we avoid mortal sin and “remain in Him” (per John 6:56).
One thing to be careful about, however, is not to assume that the Eucharist is exactly the same thing as the Incarnation of Christ --that is, another Incarnation. In the Incarnation, God became man. In the Eucharist, this same Incarnation (that of the God-man) is made present, mysteriously and Sacramentally. But, Christ is NOT incarnated again in the bread and wine. He does not manifest a second (or repeated) incarnation. Rather, the substance (metaphysical nature) of bread and wine are replaced (miraculously) by the metaphysical substance (Personal Presence) of Jesus Christ. This is not a second Incarnation --that is, He Who is fully-God and fully-man DOES NOT likewise become fully-bread and fully-wine. Rather, only the physical appearances (i.e., the perceptible sensual properties) of bread and wine remain (as a sign ordained by God to illustrate that Christ is our nourishment), but their substance (metaphysical nature) no longer remain, and what is there is Christ Himself --that is, the God-man; the one and only Incarnation. This is why Catholics must reject the Lutheran idea of “consubstantiation” --the doctrine that the bread and wine remain and are fully-present in the Eucharist …because it implies a second Incarnation. In receiving the Eucharist, we only receive the one Incarnation of Christ --the SAME Jesus Who died and rose. As St. Ignatius of Antioch said way back in A.D. 107,
“Consider how contrary to God are the minds of the heterodox …the abstain from the Eucharist and from prayers because they do not believe that the Eucharist is the Lord’s Body, the SAME Body that died for our sins and which the Father, in His graciousness, rose from the dead.”
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