Whether the whole Christ is contained under each species of this sacrament?
Objection 1: It seems that the whole Christ is not contained under both species of this sacrament. For this sacrament is ordained for the salvation of the faithful, not by virtue of the species, but by virtue of what is contained under the species, because the species were there even before the consecration, from which comes the power of this sacrament. If nothing, then, be contained under one species, but what is contained under the other, and if the whole Christ be contained under both, it seems that one of them is superfluous in this sacrament.
Objection 2: Further, it was stated above (A 1, ad 1) that all the other parts of the body, such as the bones, nerves, and the like, are comprised under the name of flesh. But the blood is one of the parts of the human body, as Aristotle proves (De Anima Histor. i). If, then, Christ's blood be contained under the species of bread, just as the other parts of the body are contained there, the blood ought not to be consecrated apart, just as no other part of the body is consecrated separately.
Objection 3: Further, what is once "in being" cannot be again "in becoming." But Christ's body has already begun to be in this sacrament by the consecration of the bread. Therefore, it cannot begin again to be there by the consecration of the wine; and so Christ's body will not be contained under the species of the wine, and accordingly neither the entire Christ. Therefore the whole Christ is not contained under each species.
On the contrary, The gloss on 1 Cor. 11:25, commenting on the word "Chalice," says that "under each species," namely, of the bread and wine, "the same is received"; and thus it seems that Christ is entire under each species.
I answer that, After what we have said above (A 1), it must be held most certainly that the whole Christ is under each sacramental species yet not alike in each. For the body of Christ is indeed present under the species of bread by the power of the sacrament, while the blood is there from real concomitance, as stated above (A 1, ad 1) in regard to the soul and Godhead of Christ; and under the species of wine the blood is present by the power of the sacrament, and His body by real concomitance, as is also His soul and Godhead: because now Christ's blood is not separated from His body, as it was at the time of His Passion and death. Hence if this sacrament had been celebrated then, the body of Christ would have been under the species of the bread, but without the blood; and, under the species of the wine, the blood would have been present without the body, as it was then, in fact.
Reply to Objection 1: Although the whole Christ is under each species, yet it is so not without purpose. For in the first place this serves to represent Christ's Passion, in which the blood was separated from the body; hence in the form for the consecration of the blood mention is made of its shedding. Secondly, it is in keeping with the use of this sacrament, that Christ's body be shown apart to the faithful as food, and the blood as drink. Thirdly, it is in keeping with its effect, in which sense it was stated above (Q 74, A 1) that "the body is offered for the salvation of the body, and the blood for the salvation of the soul."
Reply to Objection 2: In Christ's Passion, of which this is the memorial, the other parts of the body were not separated from one another, as the blood was, but the body remained entire, according to Ex. 12:46: "You shall not break a bone thereof." And therefore in this sacrament the blood is consecrated apart from the body, but no other part is consecrated separately from the rest.
Reply to Objection 3: As stated above, the body of Christ is not under the species of wine by the power of the sacrament, but by real concomitance: and therefore by the consecration of the wine the body of Christ is not there of itself, but concomitantly.
III · Q. 76, Art. 3: Whether Christ is entire under every part of the species of the bread and wine?
Whether Christ is entire under every part of the species of the bread and wine?
Objection 1: It seems that Christ is not entire under every part of the species of bread and wine. Because those species can be divided infinitely. If therefore Christ be entirely under every part of the said species, it would follow that He is in this sacrament an infinite number of times: which is unreasonable; because the infinite is repugnant not only to nature, but likewise to grace.
Objection 2: Further, since Christ's is an organic body, it has parts determinately distant. for a determinate distance of the individual parts from each other is of the very nature of an organic body, as that of eye from eye, and eye from ear. But this could not be so, if Christ were entire under every part of the species; for every part would have to be under every other part, and so where one part would be, there another part would be. It cannot be then that the entire Christ is under every part of the host or of the wine contained in the chalice.
Objection 3: Further, Christ's body always retains the true nature of a body, nor is it ever changed into a spirit. Now it is the nature of a body for it to be "quantity having position" (Predic. iv). But it belongs to the nature of this quantity that the various parts exist in various parts of place. Therefore, apparently it is impossible for the entire Christ to be under every part of the species.
On the contrary, Augustine says in a sermon (Gregory, Sacramentarium): "Each receives Christ the Lord, Who is entire under every morsel, nor is He less in each portion, but bestows Himself entire under each."
I answer that, As was observed above (A 1, ad 3), because the substance of Christ's body is in this sacrament by the power of the sacrament, while dimensive quantity is there by reason of real concomitance, consequently Christ's body is in this sacrament substantively, that is, in the way in which substance is under dimensions, but not after the manner of dimensions, which means, not in the way in which the dimensive quantity of a body is under the dimensive quantity of place.
Now it is evident that the whole nature of a substance is under every part of the dimensions under which it is contained; just as the entire nature of air is under every part of air, and the entire nature of bread under every part of bread; and this indifferently, whether the dimensions be actually divided (as when the air is divided or the bread cut), or whether they be actually undivided, but potentially divisible. And therefore it is manifest that the entire Christ is under every part of the species of the bread, even while the host remains entire, and not merely when it is broken, as some say, giving the example of an image which appears in a mirror, which appears as one in the unbroken mirror, whereas when the mirror is broken, there is an image in each part of the broken mirror: for the comparison is not perfect, because the multiplying of such images results in the broken mirror on account of the various reflections in the various parts of the mirror; but here there is only one consecration, whereby Christ's body is in this sacrament.
Reply to Objection 1: Number follows division, and therefore so long as quantity remains actually undivided, neither is the substance of any thing several times under its proper dimensions, nor is Christ's body several times under the dimensions of the bread; and consequently not an infinite number of times, but just as many times as it is divided into parts.
Reply to Objection 2: The determinate distance of parts in an organic body is based upon its dimensive quantity; but the nature of substance precedes even dimensive quantity. And since the conversion of the substance of the bread is terminated at the substance of the body of Christ, and since according to the manner of substance the body of Christ is properly and directly in this sacrament; such distance of parts is indeed in Christ's true body, which, however, is not compared to this sacrament according to such distance, but according to the manner of its substance, as stated above (A 1, ad 3).
Reply to Objection 3: This argument is based on the nature of a body, arising from dimensive quantity. But it was said above (ad 2) that Christ's body is compared with this sacrament not by reason of dimensive quantity, but by reason of its substance, as already stated.