FIRST ARTICLE [III, Q. 76, Art. 1]

Whether the Whole Christ Is Contained Under This Sacrament?

Objection 1: It seems that the whole Christ is not contained under

this sacrament, because Christ begins to be in this sacrament by

conversion of the bread and wine. But it is evident that the bread

and wine cannot be changed either into the Godhead or into the soul

of Christ. Since therefore Christ exists in three substances, namely,

the Godhead, soul and body, as shown above (Q. 2, A. 5; Q. 5, AA. 1,

3), it seems that the entire Christ is not under this sacrament.

Obj. 2: Further, Christ is in this sacrament, forasmuch as it is

ordained to the refection of the faithful, which consists in food and

drink, as stated above (Q. 74, A. 1). But our Lord said (John 6:56):

"My flesh is meat indeed, and My blood is drink indeed." Therefore,

only the flesh and blood of Christ are contained in this sacrament.

But there are many other parts of Christ's body, for instance, the

nerves, bones, and such like. Therefore the entire Christ is not

contained under this sacrament.

Obj. 3: Further, a body of greater quantity cannot be contained under

the measure of a lesser. But the measure of the bread and wine is

much smaller than the measure of Christ's body. Therefore it is

impossible that the entire Christ be contained under this sacrament.

_On the contrary,_ Ambrose says (De Officiis): "Christ is in this

sacrament."

_I answer that,_ It is absolutely necessary to confess according to

Catholic faith that the entire Christ is in this sacrament. Yet we

must know that there is something of Christ in this sacrament in a

twofold manner: first, as it were, by the power of the sacrament;

secondly, from natural concomitance. By the power of the sacrament,

there is under the species of this sacrament that into which the

pre-existing substance of the bread and wine is changed, as expressed

by the words of the form, which are effective in this as in the other

sacraments; for instance, by the words: "This is My body," or, "This

is My blood." But from natural concomitance there is also in this

sacrament that which is really united with that thing wherein the

aforesaid conversion is terminated. For if any two things be really

united, then wherever the one is really, there must the other also

be: since things really united together are only distinguished by an

operation of the mind.

Reply Obj. 1: Because the change of the bread and wine is not

terminated at the Godhead or the soul of Christ, it follows as a

consequence that the Godhead or the soul of Christ is in this

sacrament not by the power of the sacrament, but from real

concomitance. For since the Godhead never set aside the assumed body,

wherever the body of Christ is, there, of necessity, must the Godhead

be; and therefore it is necessary for the Godhead to be in this

sacrament concomitantly with His body. Hence we read in the

profession of faith at Ephesus (P. I., chap. xxvi): "We are made

partakers of the body and blood of Christ, not as taking common

flesh, nor as of a holy man united to the Word in dignity, but the

truly life-giving flesh of the Word Himself."

On the other hand, His soul was truly separated from His body, as

stated above (Q. 50, A. 5). And therefore had this sacrament been

celebrated during those three days when He was dead, the soul of

Christ would not have been there, neither by the power of the

sacrament, nor from real concomitance. But since "Christ rising from

the dead dieth now no more" (Rom. 6:9), His soul is always really

united with His body. And therefore in this sacrament the body indeed

of Christ is present by the power of the sacrament, but His soul from

real concomitance.

Reply Obj. 2: By the power of the sacrament there is contained under

it, as to the species of the bread, not only the flesh, but the

entire body of Christ, that is, the bones the nerves, and the like.

And this is apparent from the form of this sacrament, wherein it is

not said: "This is My flesh," but "This is My body." Accordingly,

when our Lord said (John 6:56): "My flesh is meat indeed," there the

word flesh is put for the entire body, because according to human

custom it seems to be more adapted for eating, as men commonly are

fed on the flesh of animals, but not on the bones or the like.

Reply Obj. 3: As has been already stated (Q. 75, A. 5), after the

consecration of the bread into the body of Christ, or of the wine

into His blood, the accidents of both remain. From which it is

evident that the dimensions of the bread or wine are not changed into

the dimensions of the body of Christ, but substance into substance.

And so the substance of Christ's body or blood is under this

sacrament by the power of the sacrament, but not the dimensions of

Christ's body or blood. Hence it is clear that the body of Christ is

in this sacrament _by way of substance,_ and not by way of quantity.

But the proper totality of substance is contained indifferently in a

small or large quantity; as the whole nature of air in a great or

small amount of air, and the whole nature of a man in a big or small

individual. Wherefore, after the consecration, the whole substance of

Christ's body and blood is contained in this sacrament, just as the

whole substance of the bread and wine was contained there before the

consecration.

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Summa Theologica, Part III (Tertia Pars) From the Complete American Edition · 第 539 / 654 题