[III.q.64.a.1.arg.1] It seems that not God alone, but also the minister, works inwardly unto the sacramental effect. For the inward sacramental effect is to cleanse man from sin and enlighten him by grace. But it belongs to the ministers of the Church "to cleanse, enlighten and perfect," as Dionysius explains (Coel. Hier. v). Therefore it seems that the sacramental effect is the work not only of God, but also of the ministers of the Church.

[III.q.64.a.1.arg.2] Further, certain prayers are offered up in conferring the sacraments. But the prayers of the righteous are more acceptable to God than those of any other, according to John 9:31: "If a man be a server of God, and doth His will, him He heareth." Therefore it stems that a man obtains a greater sacramental effect if he receive it from a good minister. Consequently, the interior effect is partly the work of the minister and not of God alone.

[III.q.64.a.1.arg.3] Further, man is of greater account than an inanimate thing. But an inanimate thing contributes something to the interior effect: since "water touches the body and cleanses the soul," as Augustine says (Tract. lxxx in Joan.). Therefore the interior sacramental effect is partly the work of man and not of God alone.

[III.q.64.a.1.sc] It is written (Romans 8:33): "God that justifieth." Since, then, the inward effect of all the sacraments is justification, it seems that God alone works the interior sacramental effect.

[III.q.64.a.1.co] There are two ways of producing an effect; first, as a principal agent; secondly, as an instrument. In the former way the interior sacramental effect is the work of God alone: first, because God alone can enter the soul wherein the sacramental effect takes place; and no agent can operate immediately where it is not: secondly, because grace which is an interior sacramental effect is from God alone, as we have established in I-II, 112, 1; while the character which is the interior effect of certain sacraments, is an instrumental power which flows from the principal agent, which is God. In the second way, however, the interior sacramental effect can be the work of man, in so far as he works as a minister. For a minister is of the nature of an instrument, since the action of both is applied to something extrinsic, while the interior effect is produced through the power of the principal agent, which is God.

[III.q.64.a.1.ad.1] Cleansing in so far as it is attributed to the ministers of the Church is not a washing from sin: deacons are said to "cleanse," inasmuch as they remove the unclean from the body of the faithful, or prepare them by their pious admonitions for the reception of the sacraments. In like manner also priests are said to "enlighten" God's people, not indeed by giving them grace, but by conferring on them the sacraments of grace; as Dionysius explains (Coel. Hier. v).

[III.q.64.a.1.ad.2] The prayers which are said in giving the sacraments, are offered to God, not on the part of the individual, but on the part of the whole Church, whose prayers are acceptable to God, according to Matthew 18:19: "If two of you shall consent upon earth, concerning anything whatsoever they shall ask, it shall be done to them by My Father." Nor is there any reason why the devotion of a just man should not contribute to this effect. But that which is the sacramental effect is not impetrated by the prayer of the Church or of the minister, but through the merit of Christ's Passion, the power of which operates in the sacraments, as stated above (Question 62, Article 5). Wherefore the sacramental effect is made no better by a better minister. And yet something in addition may be impetrated for the receiver of the sacrament through the devotion of the minister: but this is not the work of the minister, but the work of God Who hears the minister's prayer.

[III.q.64.a.1.ad.3] Inanimate things do not produce the sacramental effect, except instrumentally, as stated above. In like manner neither do men produce the sacramental effect, except ministerially, as also stated above.

[III.q.64.a.2.arg.1] It seems that the sacraments are not instituted by God alone. For those things which God has instituted are delivered to us in Holy Scripture. But in the sacraments certain things are done which are nowhere mentioned in Holy Scripture; for instance, the chrism with which men are confirmed, the oil with which priests are anointed, and many others, both words and actions, which we employ in the sacraments. Therefore the sacraments were not instituted by God alone.

[III.q.64.a.2.arg.2] Further, a sacrament is a kind of sign. Now sensible things have their own natural signification. Nor can it be said that God takes pleasure in certain significations and not in others; because He approves of all that He made. Moreover, it seems to be peculiar to the demons to be enticed to something by means of signs; for Augustine says (De Civ. Dei xxi): "The demons are enticed . . . by means of creatures, which were created not by them but by God, by various means of attraction according to their various natures, not as an animal is enticed by food, but as a spirit is drawn by a sign." It seems, therefore, that there is no need for the sacraments to be instituted by God.

[III.q.64.a.2.arg.3] Further, the apostles were God's vicegerents on earth: hence the Apostle says (2 Corinthians 2:10): "For what I have pardoned, if I have pardoned anything, for your sakes have I done it in the person of Christ," i.e. as though Christ Himself had pardoned. Therefore it seems that the apostles and their successors can institute new sacraments.

[III.q.64.a.2.sc] The institutor of anything is he who gives it strength and power: as in the case of those who institute laws. But the power of a sacrament is from God alone, as we have shown above (1; 62, 1). Therefore God alone can institute a sacrament.

[III.q.64.a.2.co] As appears from what has been said above (1; 62, 1), the sacraments are instrumental causes of spiritual effects. Now an instrument has its power from the principal agent. But an agent in respect of a sacrament is twofold; viz. he who institutes the sacraments, and he who makes use of the sacrament instituted, by applying it for the production of the effect. Now the power of a sacrament cannot be from him who makes use of the sacrament: because he works but as a minister. Consequently, it follows that the power of the sacrament is from the institutor of the sacrament. Since, therefore, the power of the sacrament is from God alone, it follows that God alone can institute the sacraments.

[III.q.64.a.2.ad.1] Human institutions observed in the sacraments are not essential to the sacrament; but belong to the solemnity which is added to the sacraments in order to arouse devotion and reverence in the recipients. But those things that are essential to the sacrament, are instituted by Christ Himself, Who is God and man. And though they are not all handed down by the Scriptures, yet the Church holds them from the intimate tradition of the apostles, according to the saying of the Apostle (1 Corinthians 11:34): "The rest I will set in order when I come."

[III.q.64.a.2.ad.2] From their very nature sensible things have a certain aptitude for the signifying of spiritual effects: but this aptitude is fixed by the Divine institution to some special signification. This is what Hugh of St. Victor means by saying (De Sacram. i) that "a sacrament owes its signification to its institution." Yet God chooses certain things rather than others for sacramental signification, not as though His choice were restricted to them, but in order that their signification be more suitable to them.

[III.q.64.a.2.ad.3] The apostles and their successors are God's vicars in governing the Church which is built on faith and the sacraments of faith. Wherefore, just as they may not institute another Church, so neither may they deliver another faith, nor institute other sacraments: on the contrary, the Church is said to be built up with the sacraments "which flowed from the side of Christ while hanging on the Cross."

[III.q.64.a.4.arg.1] It seems that Christ could not communicate to ministers the power which He had in the sacraments. For as Augustine argues against Maximin, "if He could, but would not, He was jealous of His power." But jealousy was far from Christ Who had the fulness of charity. Since, therefore, Christ did not communicate His power to ministers, it seems that He could not.

[III.q.64.a.4.arg.2] Further, on John 14:12: "Greater than these shall he do," Augustine says (Tract. lxxii): "I affirm this to be altogether greater," namely, for a man from being ungodly to be made righteous, "than to create heaven and earth." But Christ could not communicate to His disciples the power of creating heaven and earth: neither, therefore, could He give them the power of making the ungodly to be righteous. Since, therefore, the justification of the ungodly is effected by the power that Christ has in the sacraments, it seems that He could not communicate that power to ministers.

[III.q.64.a.4.arg.3] Further, it belongs to Christ as Head of the Church that grace should flow from Him to others, according to John 1:16: "Of His fulness we all have received." But this could not be communicated to others; since then the Church would be deformed, having many heads. Therefore it seems that Christ could not communicate His power to ministers.

[III.q.64.a.4.sc] on John 1:31: "I knew Him not," Augustine says (Tract. v) that "he did not know that our Lord having the authority of baptizing . . . would keep it to Himself." But John would not have been in ignorance of this, if such a power were incommunicable. Therefore Christ could communicate His power to ministers.

[III.q.64.a.4.co] As stated above (Article 3), Christ had a twofold power in the sacraments. one was the power of "authority," which belongs to Him as God: and this power He could not communicate to any creature; just as neither could He communicate the Divine Essence. The other was the power of "excellence," which belongs to Him as man. This power He could communicate to ministers; namely, by giving them such a fulness of grace--that their merits would conduce to the sacramental effect--that by the invocation of their names, the sacraments would be sanctified--and that they themselves might institute sacraments, and by their mere will confer the sacramental effect without observing the sacramental rite. For a united instrument, the more powerful it is, is all the more able to lend its power to the separated instrument; as the hand can to a stick.

[III.q.64.a.4.ad.1] It was not through jealousy that Christ refrained from communicating to ministers His power of excellence, but for the good of the faithful; lest they should put their trust in men, and lest there should be various kinds of sacraments, giving rise to division in the Church; as may be seen in those who said: "I am of Paul, I am of Apollo, and I of Cephas" (1 Corinthians 1:12).

[III.q.64.a.4.ad.2] This objection is true of the power of authority, which belongs to Christ as God. At the same time the power of excellence can be called authority in comparison to other ministers. Whence on 1 Corinthians 1:13: "Is Christ divided?" the gloss says that "He could give power of authority in baptizing, to those to whom He gave the power of administering it."

[III.q.64.a.4.ad.3] It was in order to avoid the incongruity of many heads in the Church, that Christ was unwilling to communicate to ministers His power of excellence. If, however, He had done so, He would have been Head in chief; the others in subjection to Him.

[III.q.64.a.5.arg.1] It seems that the sacraments cannot be conferred by evil ministers. For the sacraments of the New Law are ordained for the purpose of cleansing from sin and for the bestowal of grace. Now evil men, being themselves unclean, cannot cleanse others from sin, according to Sirach 34:4: "Who [Vulgate: 'What'] can be made clean by the unclean?" Moreover, since they have not grace, it seems that they cannot give grace, for "no one gives what he has not." It seems, therefore, that the sacraments cannot be conferred by wicked men.

[III.q.64.a.5.arg.2] Further, all the power of the sacraments is derived from Christ, as stated above (3; 62, 5). But evil men are cut off from Christ: because they have not charity, by which the members are united to their Head, according to 1 John 4:16: "He that abideth in charity, abideth in God, and God in him." Therefore it seems that the sacraments cannot be conferred by evil men.

[III.q.64.a.5.arg.3] Further, if anything is wanting that is required for the sacraments, the sacrament is invalid; for instance, if the required matter or form be wanting. But the minister required for a sacrament is one who is without the stain of sin, according to Leviticus 21:17-18: "Whosoever of thy seed throughout their families, hath a blemish, he shall not offer bread to his God, neither shall he approach to minister to Him." Therefore it seems that if the minister be wicked, the sacrament has no effect.

[III.q.64.a.5.sc] Augustine says on John 1:33: "He upon Whom thou shalt see the Spirit," etc. (Tract. v in Joan.), that "John did not know that our Lord, having the authority of baptizing, would keep it to Himself, but that the ministry would certainly pass to both good and evil men . . . What is a bad minister to thee, where the Lord is good?"

[III.q.64.a.5.ad.1] The ministers of the Church do not by their own power cleanse from sin those who approach the sacraments, nor do they confer grace on them: it is Christ Who does this by His own power while He employs them as instruments. Consequently, those who approach the sacraments receive an effect whereby they are enlikened not to the ministers but to Christ.

[III.q.64.a.5.ad.2] Christ's members are united to their Head by charity, so that they may receive life from Him; for as it is written (1 John 3:14): "He that loveth not abideth in death." Now it is possible for a man to work with a lifeless instrument, and separated from him as to bodily union, provided it be united to him by some sort of motion: for a workman works in one way with his hand, in another with his axe. Consequently, it is thus that Christ works in the sacraments, both by wicked men as lifeless instruments, and by good men as living instruments.

[III.q.64.a.5.ad.3] A thing is required in a sacrament in two ways. First, as being essential to it: and if this be wanting, the sacrament is invalid; for instance, if the due form or matter be wanting. Secondly, a thing is required for a sacrament, by reason of a certain fitness. And in this way good ministers are required for a sacrament.

[III.q.64.a.6.arg.1] It seems that wicked men do not sin in administering the sacraments. For just as men serve God in the sacraments, so do they serve Him in works of charity; whence it is written (Hebrews 13:16): "Do not forget to do good and to impart, for by such sacrifices God's favor is obtained." But the wicked do not sin in serving God by works of charity: indeed, they should be persuaded to do so, according to Daniel 4:24: "Let my counsel be acceptable" to the king; "Redeem thou thy sins with alms." Therefore it seems that wicked men do not sin in administering the sacraments.

[III.q.64.a.6.arg.2] Further, whoever co-operates with another in his sin, is also guilty of sin, according to Romans 1:32: "He is [Vulgate: 'They are'] worthy of death; not only he that commits the sin, but also he who consents to them that do them." But if wicked ministers sin in administering sacraments, those who receive sacraments from them, co-operate in their sin. Therefore they would sin also; which seems unreasonable.

[III.q.64.a.6.arg.3] Further, it seems that no one should act when in doubt, for thus man would be driven to despair, as being unable to avoid sin. But if the wicked were to sin in administering sacraments, they would be in a state of perplexity: since sometimes they would sin also if they did not administer sacraments; for instance, when by reason of their office it is their bounden duty to do so; for it is written (1 Corinthians 9:16): "For a necessity lieth upon me: Woe is unto me if I preach not the gospel." Sometimes also on account of some danger; for instance, if a child in danger of death be brought to a sinner for baptism. Therefore it seems that the wicked do not sin in administering the sacraments.

[III.q.64.a.6.sc] Dionysius says (Eccl. Hier. i) that "it is wrong for the wicked even to touch the symbols," i.e. the sacramental signs. And he says in the epistle to Demophilus: "It seems presumptuous for such a man," i.e. a sinner, "to lay hands on priestly things; he is neither afraid nor ashamed, all unworthy that he is, to take part in Divine things, with the thought that God does not see what he sees in himself: he thinks, by false pretenses, to cheat Him Whom he calls his Father; he dares to utter, in the person of Christ, words polluted by his infamy, I will not call them prayers, over the Divine symbols."

[III.q.64.a.6.co] A sinful action consists in this, that a man "fails to act as he ought to," as the Philosopher explains (Ethic. ii). Now it has been said (5, ad 3) that it is fitting for the ministers of sacraments to be righteous; because ministers should be like unto their Lord, according to Leviticus 19:2: "Be ye holy, because I . . . am holy"; and Sirach 10:2: "As the judge of the people is himself, so also are his ministers." Consequently, there can be no doubt that the wicked sin by exercising the ministry of God and the Church, by conferring the sacraments. And since this sin pertains to irreverence towards God and the contamination of holy things, as far as the man who sins is concerned, although holy things in themselves cannot be contaminated; it follows that such a sin is mortal in its genus.

[III.q.64.a.6.ad.1] Works of charity are not made holy by some process of consecration, but they belong to the holiness of righteousness, as being in a way parts of righteousness. Consequently, when a man shows himself as a minister of God, by doing works of charity, if he be righteous, he will be made yet holier; but if he be a sinner, he is thereby disposed to holiness. On the other hand, the sacraments are holy in themselves owing to their mystical consecration. Wherefore the holiness of righteousness is required in the minister, that he may be suitable for his ministry: for which reason he acts unbecomingly and sins, if while in a state of sin he attempts to fulfil that ministry.

[III.q.64.a.6.ad.2] He who approaches a sacrament, receives it from a minister of the Church, not because he is such and such a man, but because he is a minister of the Church. Consequently, as long as the latter is tolerated in the ministry, he that receives a sacrament from him, does not communicate in his sin, but communicates with the Church from. whom he has his ministry. But if the Church, by degrading, excommunicating, or suspending him, does not tolerate him in the ministry, he that receives a sacrament from him sins, because he communicates in his sin.

[III.q.64.a.6.ad.3] A man who is in mortal sin is not perplexed simply, if by reason of his office it be his bounden duty to minister sacraments; because he can repent of his sin and so minister lawfully. But there is nothing unreasonable in his being perplexed, if we suppose that he wishes to remain in sin.

However, in a case of necessity when even a lay person might baptize, he would not sin in baptizing. For it is clear that then he does not exercise the ministry of the Church, but comes to the aid of one who is in need of his services. It is not so with the other sacraments, which are not so necessary as baptism, as we shall show further on (65, 3,4; 62, 3).

[III.q.64.a.7.arg.1] It seems that angels can administer sacraments. Because a higher minister can do whatever the lower can; thus a priest can do whatever a deacon can: but not conversely. But angels are higher ministers in the hierarchical order than any men whatsoever, as Dionysius says (Coel. Hier. ix). Therefore, since men can be ministers of sacraments, it seems that much more can angels be.

[III.q.64.a.7.arg.2] Further, in heaven holy men are likened to the angels (Matthew 22:30). But some holy men, when in heaven, can be ministers of the sacraments; since the sacramental character is indelible, as stated above (Question 63, Article 5). Therefore it seems that angels too can be ministers of sacraments.

[III.q.64.a.7.sc] It is written (Hebrews 5:1): "Every high priest taken from among men, is ordained for men in the things that appertain to God." But angels whether good or bad are not taken from among men. Therefore they are not ordained ministers in the things that appertain to God, i.e. in the sacraments.

[III.q.64.a.7.co] As stated above (3; 62, 5), the whole power of the sacraments flows from Christ's Passion, which belongs to Him as man. And Him in their very nature men, not angels, resemble; indeed, in respect of His Passion, He is described as being "a little lower than the angels" (Hebrews 2:9). Consequently, it belongs to men, but not to angels, to dispense the sacraments and to take part in their administration.

But it must be observed that as God did not bind His power to the sacraments, so as to be unable to bestow the sacramental effect without conferring the sacrament; so neither did He bind His power to the ministers of the Church so as to be unable to give angels power to administer the sacraments. And since good angels are messengers of truth; if any sacramental rite were performed by good angels, it should be considered valid, because it ought to be evident that this is being done by the will of God: for instance, certain churches are said to have been consecrated by the ministry of the angels [See Acta S.S., September 29]. But if demons, who are "lying spirits," were to perform a sacramental rite, it should be pronounced as invalid.

[III.q.64.a.7.ad.1] What men do in a less perfect manner, i.e. by sensible sacraments, which are proportionate to their nature, angels also do, as ministers of a higher degree, in a more perfect manner, i.e. invisibly--by cleansing, enlightening, and perfecting.

[III.q.64.a.7.ad.2] The saints in heaven resemble the angels as to their share of glory, but not as to the conditions of their nature: and consequently not in regard to the sacraments.

[III.q.64.a.8.arg.1] It seems that the minister's intention is not required for the validity of a sacrament. For the minister of a sacrament works instrumentally. But the perfection of an action does not depend on the intention of the instrument, but on that of the principal agent. Therefore the minister's intention is not necessary for the perfecting of a sacrament.

[III.q.64.a.8.arg.2] Further, one man's intention cannot be known to another. Therefore if the minister's intention were required for the validity of a sacrament, he who approaches a sacrament could not know whether he has received the sacrament. Consequently he could have no certainty in regard to salvation; the more that some sacraments are necessary for salvation, as we shall state further on (65, 4).

[III.q.64.a.8.sc] What is unintentional happens by chance. But this cannot be said of the sacramental operation. Therefore the sacraments require the intention of the minister.

[III.q.64.a.8.co] When a thing is indifferent to many uses, it must needs be determined to one, if that one has to be effected. Now those things which are done in the sacraments, can be done with various intent; for instance, washing with water, which is done in baptism, may be ordained to bodily cleanliness, to the health of the body, to amusement, and many other similar things. Consequently, it needs to be determined to one purpose, i.e. the sacramental effect, by the intention of him who washes. And this intention is expressed by the words which are pronounced in the sacraments; for instance the words, "I baptize thee in the name of the Father," etc.

[III.q.64.a.8.ad.1] An inanimate instrument has no intention regarding the effect; but instead of the intention there is the motion whereby it is moved by the principal agent. But an animate instrument, such as a minister, is not only moved, but in a sense moves itself, in so far as by his will he moves his bodily members to act. Consequently, his intention is required, whereby he subjects himself to the principal agent; that is, it is necessary that he intend to do that which Christ and the Church do.

[III.q.64.a.8.ad.2] On this point there are two opinions. For some hold that the mental intention of the minister is necessary; in the absence of which the sacrament is invalid: and that this defect in the case of children who have not the intention of approaching the sacrament, is made good by Christ, Who baptizes inwardly: whereas in adults, who have that intention, this defect is made good by their faith and devotion.

This might be true enough of the ultimate effect, i.e. justification from sins; but as to that effect which is both real and sacramental, viz. the character, it does not appear possible for it to be made good by the devotion of the recipient, since a character is never imprinted save by a sacrament.

Consequently, others with better reason hold that the minister of a sacrament acts in the person of the whole Church, whose minister he is; while in the words uttered by him, the intention of the Church is expressed; and that this suffices for the validity of the sacrament, except the contrary be expressed on the part either of the minister or of the recipient of the sacrament.

[III.q.64.a.9.arg.1] It seems that faith is required of necessity in the minister of a sacrament. For, as stated above (Article 8), the intention of the minister is necessary for the validity of a sacrament. But "faith directs in intention" as Augustine says against Julian (In Psalm xxxi, cf. Contra Julian iv). Therefore, if the minister is without the true faith, the sacrament is invalid.

[III.q.64.a.9.arg.2] Further, if a minister of the Church has not the true faith, it seems that he is a heretic. But heretics, seemingly, cannot confer sacraments. For Cyprian says in an epistle against heretics (lxxiii): "Everything whatsoever heretics do, is carnal, void and counterfeit, so that nothing that they do should receive our approval." And Pope Leo says in his epistle to Leo Augustus (clvi): "It is a matter of notoriety that the light of all the heavenly sacraments is extinguished in the see of Alexandria, by an act of dire and senseless cruelty. The sacrifice is no longer offered, the chrism is no longer consecrated, all the mysteries of religion have fled at the touch of the parricide hands of ungodly men." Therefore a sacrament requires of necessity that the minister should have the true faith.

[III.q.64.a.9.sc] Augustine says against the Donatist Petilian: "Remember that the evil lives of wicked men are not prejudicial to God's sacraments, by rendering them either invalid or less holy."

[III.q.64.a.9.co] As stated above (Article 5), since the minister works instrumentally in the sacraments, he acts not by his own but by Christ's power. Now just as charity belongs to a man's own power so also does faith. Wherefore, just as the validity of a sacrament does not require that the minister should have charity, and even sinners can confer sacraments, as stated above (Article 5); so neither is it necessary that he should have faith, and even an unbeliever can confer a true sacrament, provided that the other essentials be there.

[III.q.64.a.9.ad.1] It may happen that a man's faith is defective in regard to something else, and not in regard to the reality of the sacrament which he confers: for instance, he may believe that it is unlawful to swear in any case whatever, and yet he may believe that baptism is an efficient cause of salvation. And thus such unbelief does not hinder the intention of conferring the sacrament. But if his faith be defective in regard to the very sacrament that he confers, although he believe that no inward effect is caused by the thing done outwardly, yet he does know that the Catholic Church intends to confer a sacrament by that which is outwardly done. Wherefore, his unbelief notwithstanding, he can intend to do what the Church does, albeit he esteem it to be nothing. And such an intention suffices for a sacrament: because as stated above (8, ad 2) the minister of a sacrament acts in the person of the Church by whose faith any defect in the minister's faith is made good.

[III.q.64.a.9.ad.2] Some heretics in conferring sacraments do not observe the form prescribed by the Church: and these confer neither the sacrament nor the reality of the sacrament. But some do observe the form prescribed by the Church: and these confer indeed the sacrament but not the reality. I say this in the supposition that they are outwardly cut off from the Church; because from the very fact that anyone receives the sacraments from them, he sins; and consequently is hindered from receiving the effect of the sacrament. Wherefore Augustine (Fulgentius, De Fide ad Pet.) says: "Be well assured and have no doubt whatever that those who are baptized outside the Church, unless they come back to the Church, will reap disaster from their Baptism." In this sense Pope Leo says that "the light of the sacraments was extinguished in the Church of Alexandria"; viz. in regard to the reality of the sacrament, not as to the sacrament itself.

Cyprian, however, thought that heretics do not confer even the sacrament: but in this respect we do not follow his opinion. Hence Augustine says (De unico Baptismo xiii): "Though the martyr Cyprian refused to recognize Baptism conferred by heretics or schismatics, yet so great are his merits, culminating in the crown of martyrdom, that the light of his charity dispels the darkness of his fault, and if anything needed pruning, the sickle of his passion cut it off."

[III.q.64.a.10.arg.1] It seems that the validity of a sacrament requires a good intention in the minister. For the minister's intention should be in conformity with the Church's intention, as explained above (8, ad 1). But the intention of the Church is always good. Therefore the validity of a sacrament requires of necessity a good intention in the minister.

[III.q.64.a.10.arg.2] Further, a perverse intention seems worse than a playful one. But a playful intention destroys a sacrament: for instance, if someone were to baptize anybody not seriously but in fun. Much more, therefore, does a perverse intention destroy a sacrament: for instance, if somebody were to baptize a man in order to kill him afterwards.

[III.q.64.a.10.arg.3] Further, a perverse intention vitiates the whole work, according to Luke 11:34: "If thy eye be evil, thy" whole "body will be darksome." But the sacraments of Christ cannot be contaminated by evil men; as Augustine says against Petilian (Cont. Litt. Petil ii). Therefore it seems that, if the minister's intention is perverse, the sacrament is invalid.

[III.q.64.a.10.sc] A perverse intention belongs to the wickedness of the minister. But the wickedness of the minister does not annul the sacrament: neither, therefore, does his perverse intention.

[III.q.64.a.10.co] The minister's intention may be perverted in two ways. First in regard to the sacrament: for instance, when a man does not intend to confer a sacrament, but to make a mockery of it. Such a perverse intention takes away the truth of the sacrament, especially if it be manifested outwardly.

Secondly, the minister's intention may be perverted as to something that follows the sacrament: for instance, a priest may intend to baptize a woman so as to be able to abuse her; or to consecrate the Body of Christ, so as to use it for sorcery. And because that which comes first does not depend on that which follows, consequently such a perverse intention does not annul the sacrament; but the minister himself sins grievously in having such an intention.

[III.q.64.a.10.ad.1] The Church has a good intention both as to the validity of the sacrament and as to the use thereof: but it is the former intention that perfects the sacrament, while the latter conduces to the meritorious effect. Consequently, the minister who conforms his intention to the Church as to the former rectitude, but not as to the latter, perfects the sacrament indeed, but gains no merit for himself.

[III.q.64.a.10.ad.2] The intention of mimicry or fun excludes the first kind of right intention, necessary for the validity of a sacrament. Consequently, there is no comparison.

[III.q.64.a.10.ad.3] A perverse intention perverts the action of the one who has such an intention, not the action of another. Consequently, the perverse intention of the minister perverts the sacrament in so far as it is his action: not in so far as it is the action of Christ, Whose minister he is. It is just as if the servant [minister] of some man were to carry alms to the poor with a wicked intention, whereas his master had commanded him with a good intention to do so.

The Summa Theologica of St. Thomas AquinasSecond and Revised Edition, 1920Literally translated by Fathers of the English Dominican ProvinceOnline Edition Copyright © 2009 by Kevin Knight Nihil Obstat. F. Innocentius Apap, O.P., S.T.M., Censor. Theol.Imprimatur. Edus. Canonicus Surmont, Vicarius Generalis. Westmonasterii.APPROBATIO ORDINISNihil Obstat. F. Raphael Moss, O.P., S.T.L. and F. Leo Moore, O.P., S.T.L.Imprimatur. F. Beda Jarrett, O.P., S.T.L., A.M., Prior Provincialis AngliæMARIÆ IMMACULATÆ - SEDI SAPIENTIÆ