THIRD ARTICLE [III, Q. 79, Art. 3]

Whether the Forgiveness of Mortal Sin Is an Effect of This Sacrament?

Objection 1: It seems that the forgiveness of mortal sin is an effect

of this sacrament. For it is said in one of the Collects

(Postcommunion, Pro vivis et defunctis): "May this sacrament be a

cleansing from crimes." But mortal sins are called crimes. Therefore

mortal sins are blotted out by this sacrament.

Obj. 2: Further, this sacrament, like Baptism, works by the power of

Christ's Passion. But mortal sins are forgiven by Baptism, as stated

above (Q. 69, A. 1). Therefore they are forgiven likewise by this

sacrament, especially since in the form of this sacrament it is said:

"Which shall be shed for many unto the forgiveness of sins."

Obj. 3: Further, grace is bestowed through this sacrament, as stated

above (A. 1). But by grace a man is justified from mortal sins,

according to Rom. 3:24: "Being justified freely by His grace."

Therefore mortal sins are forgiven by this sacrament.

_On the contrary,_ It is written (1 Cor. 11:29): "He that eateth and

drinketh unworthily, eateth and drinketh judgment to himself": and a

gloss of the same passage makes the following commentary: "He eats

and drinks unworthily who is in the state of sin, or who handles (the

sacrament) irreverently; and such a one eats and drinks judgment,

i.e. damnation, unto himself." Therefore, he that is in mortal sin,

by taking the sacrament heaps sin upon sin, rather than obtains

forgiveness of his sin.

_I answer that,_ The power of this sacrament can be considered in two

ways. First of all, in itself: and thus this sacrament has from

Christ's Passion the power of forgiving all sins, since the Passion

is the fount and cause of the forgiveness of sins.

Secondly, it can be considered in comparison with the recipient of

the sacrament, in so far as there is, or is not, found in him an

obstacle to receiving the fruit of this sacrament. Now whoever is

conscious of mortal sin, has within him an obstacle to receiving the

effect of this sacrament; since he is not a proper recipient of this

sacrament, both because he is not alive spiritually, and so he ought

not to eat the spiritual nourishment, since nourishment is confined

to the living; and because he cannot be united with Christ, which is

the effect of this sacrament, as long as he retains an attachment

towards mortal sin. Consequently, as is said in the book _De Eccles.

Dogm.:_ "If the soul leans towards sin, it is burdened rather than

purified from partaking of the Eucharist." Hence, in him who is

conscious of mortal sin, this sacrament does not cause the

forgiveness of sin.

Nevertheless this sacrament can effect the forgiveness of sin in two

ways. First of all, by being received, not actually, but in desire;

as when a man is first justified from sin. Secondly, when received by

one in mortal sin of which he is not conscious, and for which he has

no attachment; since possibly he was not sufficiently contrite at

first, but by approaching this sacrament devoutly and reverently he

obtains the grace of charity, which will perfect his contrition and

bring forgiveness of sin.

Reply Obj. 1: We ask that this sacrament may be the "cleansing of

crimes," or of those sins of which we are unconscious, according to

Ps. 18:13: "Lord, cleanse me from my hidden sins"; or that our

contrition may be perfected for the forgiveness of our sins; or that

strength be bestowed on us to avoid sin.

Reply Obj. 2: Baptism is spiritual generation, which is a transition

from spiritual non-being into spiritual being, and is given by way of

ablution. Consequently, in both respects he who is conscious of

mortal sin does not improperly approach Baptism. But in this

sacrament man receives Christ within himself by way of spiritual

nourishment, which is unbecoming to one that lies dead in his sins.

Therefore the comparison does not hold good.

Reply Obj. 3: Grace is the sufficient cause of the forgiveness of

mortal sin; yet it does not forgive sin except when it is first

bestowed on the sinner. But it is not given so in this sacrament.

Hence the argument does not prove.

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Summa Theologica, Part III (Tertia Pars) From the Complete American Edition · 第 566 / 654 题