Objection 3: Further, as was observed above (A[4], ad 3), these words, by their signification, effect the change of the bread into the body of Christ. But an effective cause is understood as preceding its effect. Therefore the meaning of these words is understood as preceding the change of the bread into the body of Christ. But previous to the change this expression, "This is My body," is false. Therefore the expression is to be judged as false simply; and the same reason holds good of the other phrase: "This is the chalice of My blood," etc.
On the contrary, These words are pronounced in the person of Christ, Who says of Himself ( Jn. 14:6 ): "I am the truth."
I answer that, There have been many opinions on this point. Some have said that in this expression, "This is My body," the word "this" implies demonstration as conceived, and not as exercised, because the whole phrase is taken materially, since it is uttered by a way of narration: for the priest relates that Christ said: "This is My body."
But such a view cannot hold good, because then these words would not be applied to the corporeal matter present, and consequently the sacrament would not be valid: for Augustine says (Tract. lxxx in Joan.): "The word is added to the element, and this becomes a sacrament." Moreover this solution ignores entirely the difficulty which this question presents: for there is still the objection in regard to the first uttering of these words by Christ; since it is evident that then they were employed, not materially, but significatively. And therefore it must be said that even when spoken by the priest they are taken significatively, and not merely materially. Nor does it matter that the priest pronounces them by way of recital, as though they were spoken by Christ, because owing to Christ's infinite power, just as through contact with His flesh the regenerative power entered not only into the waters which came into contact with Christ, but into all waters throughout the whole world and during all future ages, so likewise from Christ's uttering these words they derived their consecrating power, by whatever priest they be uttered, as if Christ present were saying them.
And therefore others have said that in this phrase the word "this" appeals, not to the senses, but to the intellect; so that the meaning is, "This is My body"---i.e. "The thing signified by 'this' is My body." But neither can this stand, because, since in the sacraments the effect is that which is signified, from such a form it would not result that Christ's body was in very truth in this sacrament, but merely as in a sign, which is heretical, as stated above (Q[85], A[1]).
Consequently, others have said that the word "this" appeals to the senses; not at the precise instant of its being uttered, but merely at the last instant thereof; as when a man says, "Now I am silent," this adverb "now" points to the instant immediately following the speech: because the sense is: "Directly these words are spoken I am silent." But neither can this hold good, because in that case the meaning of the sentence would be: "My body is My body," which the above phrase does not effect, because this was so even before the utterance of the words: hence neither does the aforesaid sentence mean this.
Consequently, then, it remains to be said, as stated above (A[4]), that this sentence possesses the power of effecting the conversion of the bread into the body of Christ. And therefore it is compared to other sentences, which have power only of signifying and not of producing, as the concept of the practical intellect, which is productive of the thing, is compared to the concept of our speculative intellect which is drawn from things. because "words are signs of concepts," as the Philosopher says (Peri Herm. i). And therefore as the concept of the practical intellect does not presuppose the thing understood, but makes it, so the truth of this expression does not presuppose the thing signified, but makes it; for such is the relation of God's word to the things made by the Word. Now this change takes place not successively, but in an instant, as stated above (Q[77], A[7]). Consequently one must understand the aforesaid expression with reference to the last instant of the words being spoken, yet not so that the subject may be understood to have stood for that which is the term of the conversion; viz. that the body of Christ is the body of Christ; nor again that the subject be understood to stand for that which it was before the conversion, namely, the bread. but for that which is commonly related to both, i.e. that which is contained in general under those species. For these words do not make the body of Christ to be the body of Christ, nor do they make the bread to be the body of Christ; but what was contained under those species, and was formerly bread, they make to be the body of Christ. And therefore expressly our Lord did not say: "This bread is My body," which would be the meaning of the second opinion; nor "This My body is My body," which would be the meaning of the third opinion: but in general: "This is My body," assigning no noun on the part of the subject, but only a pronoun, which signifies substance in common, without quality, that is, without a determinate form.
Reply to Objection 1: The term "this" points to a substance, yet without determining its proper nature, as stated above.
Reply to Objection 2: The pronoun "this" does not indicate the accidents, but the substance underlying the accidents, which at first was bread, and is afterwards the body of Christ, which body, although not informed by those accidents, is yet contained under them.
Reply to Objection 3: The meaning of this expression is, in the order of nature, understood before the thing signified, just as a cause is naturally prior to the effect; but not in order of time, because this cause has its effect with it at the same time, and this suffices for the truth of the expression.
Whether the form of the consecration of the bread accomplishes its effect before the form of the consecration of the wine be completed?
Objection 1: It seems that the form of the consecration of the bread does not accomplish its effect until the form for the consecration of the wine be completed. For, as Christ's body begins to be in this sacrament by the consecration of the bread, so does His blood come to be there by the consecration of the wine. If, then, the words for consecrating the bread were to produce their effect before the consecration of the wine, it would follow that Christ's body would be present in this sacrament without the blood, which is improper.
Objection 2: Further, one sacrament has one completion: hence although there be three immersions in Baptism, yet the first immersion does not produce its effect until the third be completed. But all this sacrament is one, as stated above (Q[73], A[2]). Therefore the words whereby the bread is consecrated do not bring about their effect without the sacramental words whereby the wine is consecrated.
Objection 3: Further, there are several words in the form for consecrating the bread, the first of which do not secure their effect until the last be uttered, as stated above (A[4], ad 3). Therefore, for the same reason, neither do the words for the consecration of Christ's body produce their effect, until the words for consecrating Christ's blood are spoken.
On the contrary, Directly the words are uttered for consecrating the bread, the consecrated host is shown to the people to be adored, which would not be done if Christ's body were not there, for that would be an act of idolatry. Therefore the consecrating words of the bread produce their effect before. the words are spoken for consecrating the wine.
I answer that, Some of the earlier doctors said that these two forms, namely, for consecrating the bread and the wine, await each other's action, so that the first does not produce its effect until the second be uttered.
But this cannot stand, because, as stated above (A[5], ad 3), for the truth of this phrase, "This is My body," wherein the verb is in the present tense, it is required for the thing signified to be present simultaneously in time with the signification of the expression used; otherwise, if the thing signified had to be awaited for afterwards, a verb of the future tense would be employed, and not one of the present tense, so that we should not say, "This is My body," but "This will be My body." But the signification of this speech is complete directly those words are spoken. And therefore the thing signified must be present instantaneously, and such is the effect of this sacrament; otherwise it would not be a true speech. Moreover, this opinion is against the rite of the Church, which forthwith adores the body of Christ after the words are uttered.
Hence it must be said that the first form does not await the second in its action, but has its effect on the instant.
Reply to Objection 1: It is on this account that they who maintained the above opinion seem to have erred. Hence it must be understood that directly the consecration of the bread is complete, the body of Christ is indeed present by the power of the sacrament, and the blood by real concomitance; but afterwards by the consecration of the wine, conversely, the blood of Christ is there by the power of the sacrament, and the body by real concomitance, so that the entire Christ is under either species, as stated above (Q[76], A[2]).
Reply to Objection 2: This sacrament is one in perfection, as stated above (Q[73] , A[2]), namely, inasmuch as it is made up of two things, that is, of food and drink, each of which of itself has its own perfection; but the three immersions of Baptism are ordained to one simple effect, and therefore there is no resemblance.
Reply to Objection 3: The various words in the form for consecrating the bread constitute the truth of one speech, but the words of the different forms do not, and consequently there is no parallel.