Now Christ fulfilled the precepts of the Old Law both in His works and in His doctrine. In His works, because He was willing to be circumcised and to fulfil the other legal observances, which were binding for the time being; according to Gal. 4:4: "Made under the Law." In His doctrine He fulfilled the precepts of the Law in three ways. First, by explaining the true sense of the Law. This is clear in the case of murder and adultery, the prohibition of which the Scribes and Pharisees thought to refer only to the exterior act: wherefore Our Lord fulfilled the Law by showing that the prohibition extended also to the interior acts of sins. Secondly, Our Lord fulfilled the precepts of the Law by prescribing the safest way of complying with the statutes of the Old Law. Thus the Old Law forbade perjury: and this is more safely avoided, by abstaining altogether from swearing, save in cases of urgency. Thirdly, Our Lord fulfilled the precepts of the Law, by adding some counsels of perfection: this is clearly seen in Mt. 19:21, where Our Lord said to the man who affirmed that he had kept all the precepts of the Old Law: "One thing is wanting to thee: If thou wilt be perfect, go, sell whatsoever thou hast," etc. [*St. Thomas combines Mt. 19:21 with Mk. 10:21].
Reply Obj. 1: The New Law does not void observance of the Old Law except in the point of ceremonial precepts, as stated above (Q103, AA3,4). Now the latter were figurative of something to come. Wherefore from the very fact that the ceremonial precepts were fulfilled when those things were accomplished which they foreshadowed, it follows that they are no longer to be observed: for it they were to be observed, this would mean that something is still to be accomplished and is not yet fulfilled. Thus the promise of a future gift holds no longer when it has been fulfilled by the presentation of the gift. In this way the legal ceremonies are abolished by being fulfilled.
Reply Obj. 2: As Augustine says (Contra Faust. xix, 26), those precepts of Our Lord are not contrary to the precepts of the Old Law. For what Our Lord commanded about a man not putting away his wife, is not contrary to what the Law prescribed. "For the Law did not say: 'Let him that wills, put his wife away': the contrary of which would be not to put her away. On the contrary, the Law was unwilling that a man should put away his wife, since it prescribed a delay, so that excessive eagerness for divorce might cease through being weakened during the writing of the bill. Hence Our Lord, in order to impress the fact that a wife ought not easily to be put away, allowed no exception save in the case of fornication." The same applies to the prohibition about swearing, as stated above. The same is also clear with respect to the prohibition of retaliation. For the Law fixed a limit to revenge, by forbidding men to seek vengeance unreasonably: whereas Our Lord deprived them of vengeance more completely by commanding them to abstain from it altogether. With regard to the hatred of one's enemies, He dispelled the false interpretation of the Pharisees, by admonishing us to hate, not the person, but his sin. As to discriminating between various foods, which was a ceremonial matter, Our Lord did not forbid this to be observed: but He showed that no foods are naturally unclean, but only in token of something else, as stated above (Q102, A6, ad 1).
Reply Obj. 3: It was forbidden by the Law to touch a leper; because by doing so, man incurred a certain uncleanness of irregularity, as also by touching the dead, as stated above (Q102, A5, ad 4). But Our Lord, Who healed the leper, could not contract an uncleanness. By those things which He did on the sabbath, He did not break the sabbath in reality, as the Master Himself shows in the Gospel: both because He worked miracles by His Divine power, which is ever active among things; and because His works were concerned with the salvation of man, while the Pharisees were concerned for the well-being of animals even on the sabbath; and again because on account of urgency He excused His disciples for gathering the ears of corn on the sabbath. But He did seem to break the sabbath according to the superstitious interpretation of the Pharisees, who thought that man ought to abstain from doing even works of kindness on the sabbath; which was contrary to the intention of the Law.
Reply Obj. 4: The reason why the ceremonial precepts of the Law are not mentioned in Mt. 5 is because, as stated above (ad 1), their observance was abolished by their fulfilment. But of the judicial precepts He mentioned that of retaliation: so that what He said about it should refer to all the others. With regard to this precept, He taught that the intention of the Law was that retaliation should be sought out of love of justice, and not as a punishment out of revengeful spite, which He forbade, admonishing man to be ready to suffer yet greater insults; and this remains still in the New Law.
^Q. 107 Art. 3: Whether the New Law is contained in the Old?
It would seem that the New Law is not contained in the Old.
Obj. 1: Because the New Law consists chiefly in faith: wherefore it is called the "law of faith" (Rm. 3:27). But many points of faith are set forth in the New Law, which are not contained in the Old. Therefore the New Law is not contained in the Old.
Obj. 2: Further, a gloss says on Mt. 5:19, "He that shall break one of these least commandments," that the lesser commandments are those of the Law, and the greater commandments, those contained in the Gospel. Now the greater cannot be contained in the lesser. Therefore the New Law is not contained in the Old.
Obj. 3: Further, who holds the container holds the contents. If, therefore, the New Law is contained in the Old, it follows that whoever had the Old Law had the New: so that it was superfluous to give men a New Law when once they had the Old. Therefore the New Law is not contained in the Old.
On the contrary, As expressed in Ezech. 1:16, there was "a wheel in the midst of a wheel," i.e. "the New Testament within the Old," according to Gregory's exposition.
I answer that, One thing may be contained in another in two ways. First, actually; as a located thing is in a place. Secondly, virtually; as an effect in its cause, or as the complement in that which is incomplete; thus a genus contains its species, and a seed contains the whole tree, virtually. It is in this way that the New Law is contained in the Old: for it has been stated (A1) that the New Law is compared to the Old as perfect to imperfect. Hence Chrysostom, expounding Mk. 4:28, "The earth of itself bringeth forth fruit, first the blade, then the ear, afterwards the full corn in the ear," expresses himself as follows: "He brought forth first the blade, i.e. the Law of Nature; then the ear, i.e. the Law of Moses; lastly, the full corn, i.e. the Law of the Gospel." Hence then the New Law is in the Old as the corn in the ear.
Reply Obj. 1: Whatsoever is set down in the New Testament explicitly and openly as a point of faith, is contained in the Old Testament as a matter of belief, but implicitly, under a figure. And accordingly, even as to those things which we are bound to believe, the New Law is contained in the Old.
Reply Obj. 2: The precepts of the New Law are said to be greater than those of the Old Law, in the point of their being set forth explicitly. But as to the substance itself of the precepts of the New Testament, they are all contained in the Old. Hence Augustine says (Contra Faust. xix, 23,28) that "nearly all Our Lord's admonitions or precepts, where He expressed Himself by saying: 'But I say unto you,' are to be found also in those ancient books. Yet, since they thought that murder was only the slaying of the human body, Our Lord declared to them that every wicked impulse to hurt our brother is to be looked on as a kind of murder." And it is in the point of declarations of this kind that the precepts of the New Law are said to be greater than those of the Old. Nothing, however, prevents the greater from being contained in the lesser virtually; just as a tree is contained in the seed.
Reply Obj. 3: What is set forth implicitly needs to be declared explicitly. Hence after the publishing of the Old Law, a New Law also had to be given.
^Q. 107 Art. 4: Whether the New Law is more burdensome than the Old?
It would seem that the New Law is more burdensome than the Old.
Obj. 1: For Chrysostom (Opus Imp. in Matth., Hom. x [*The work of an unknown author]) says: "The commandments given to Moses are easy to obey: Thou shalt not kill; Thou shalt not commit adultery: but the commandments of Christ are difficult to accomplish, for instance: Thou shalt not give way to anger, or to lust." Therefore the New Law is more burdensome than the Old.
Obj. 2: Further, it is easier to make use of earthly prosperity than to suffer tribulations. But in the Old Testament observance of the Law was followed by temporal prosperity, as may be gathered from Dt. 28:1-14; whereas many kinds of trouble ensue to those who observe the New Law, as stated in 2 Cor. 6:4-10: "Let us exhibit ourselves as the ministers of God, in much patience, in tribulation, in necessities, in distresses," etc. Therefore the New Law is more burdensome than the Old.
Obj. 3: The more one has to do, the more difficult it is. But the New Law is something added to the Old. For the Old Law forbade perjury, while the New Law proscribed even swearing: the Old Law forbade a man to cast off his wife without a bill of divorce, while the New Law forbade divorce altogether; as is clearly stated in Mt. 5:31, seqq., according to Augustine's expounding. Therefore the New Law is more burdensome than the Old.
On the contrary, It is written (Mt. 11:28): "Come to Me, all you that labor and are burdened": which words are expounded by Hilary thus: "He calls to Himself all those that labor under the difficulty of observing the Law, and are burdened with the sins of this world." And further on He says of the yoke of the Gospel: "For My yoke is sweet and My burden light." Therefore the New Law is a lighter burden than the Old.
I answer that, A twofold difficult may attach to works of virtue with which the precepts of the Law are concerned. One is on the part of the outward works, which of themselves are, in a way, difficult and burdensome. And in this respect the Old Law is a much heavier burden than the New: since the Old Law by its numerous ceremonies prescribed many more outward acts than the New Law, which, in the teaching of Christ and the apostles, added very few precepts to those of the natural law; although afterwards some were added, through being instituted by the holy Fathers. Even in these Augustine says that moderation should be observed, lest good conduct should become a burden to the faithful. For he says in reply to the queries of Januarius (Ep. lv) that, "whereas God in His mercy wished religion to be a free service rendered by the public solemnization of a small number of most manifest sacraments, certain persons make it a slave's burden; so much so that the state of the Jews who were subject to the sacraments of the Law, and not to the presumptuous devices of man, was more tolerable."
The other difficulty attaches to works of virtue as to interior acts: for instance, that a virtuous deed be done with promptitude and pleasure. It is this difficulty that virtue solves, because to act thus is difficult for a man without virtue, but through virtue it becomes easy for him. In this respect the precepts of the New Law are more burdensome than those of the Old; because the New Law prohibits certain interior movements of the soul, which were not expressly forbidden in the Old Law in all cases, although they were forbidden in some, without, however, any punishment being attached to the prohibition. Now this is very difficult to a man without virtue: thus even the Philosopher states (Ethic. v, 9) that it is easy to do what a righteous man does; but that to do it in the same way, viz. with pleasure and promptitude, is difficult to a man who is not righteous. Accordingly we read also (1 Jn. 5:3) that "His commandments are not heavy": which words Augustine expounds by saying that "they are not heavy to the man that loveth; whereas they are a burden to him that loveth not."
Reply Obj. 1: The passage quoted speaks expressly of the difficulty of the New Law as to the deliberate curbing of interior movements.
Reply Obj. 2: The tribulations suffered by those who observe the New Law are not imposed by the Law itself. Moreover they are easily borne, on account of the love in which the same Law consists: since, as Augustine says (De Verb. Dom., Serm. lxx), "love makes light and nothing of things that seem arduous and beyond our power."
Reply Obj. 3: The object of these additions to the precepts of the Old Law was to render it easier to do what it prescribed, as Augustine states [*De Serm. Dom. in Monte i, 17,21; xix, 23,26]. Accordingly this does not prove that the New Law is more burdensome, but rather that it is a lighter burden.
^Q. 107 QUESTION 108: OF THOSE THINGS THAT ARE CONTAINED IN THE NEW LAW ^TOC ^Law in Particular ^5. The New Law We must now consider those things that are contained in the New Law: under which head there are four points of inquiry: (1) Whether the New Law ought to prescribe or to forbid any outward works?
(2) Whether the New Law makes sufficient provision in prescribing and forbidding external acts?
(3) Whether in the matter of internal acts it directs man sufficiently?
(4) Whether it fittingly adds counsels to precepts?
Art. 1: Whether the New Law ought to prescribe or prohibit any external acts?
It would seem that the New Law should not prescribe or prohibit any external acts.
Obj. 1: For the New Law is the Gospel of the kingdom, according to Mt. 24:14: "This Gospel of the kingdom shall be preached in the whole world." But the kingdom of God consists not in exterior, but only in interior acts, according to Lk. 17:21: "The kingdom of God is within you"; and Rm. 14:17: "The kingdom of God is not meat and drink; but justice and peace and joy in the Holy Ghost." Therefore the New Law should not prescribe or forbid any external acts.
Obj. 2: Further, the New Law is "the law of the Spirit" (Rm. 8:2). But "where the Spirit of the Lord is, there is liberty" (2 Cor. 3:17). Now there is no liberty when man is bound to do or avoid certain external acts. Therefore the New Law does not prescribe or forbid any external acts.
Obj. 3: Further, all external acts are understood as referable to the hand, just as interior acts belong to the mind. But this is assigned as the difference between the New and Old Laws that the "Old Law restrains the hand, whereas the New Law curbs the will" [*Peter Lombard, Sent. iii, D, 40]. Therefore the New Law should not contain prohibitions and commands about exterior deeds, but only about interior acts.
On the contrary, Through the New Law, men are made "children of light": wherefore it is written (Jn. 12:36): "Believe in the light that you may be the children of light." Now it is becoming that children of the light should do deeds of light and cast aside deeds of darkness, according to Eph. 5:8: "You were heretofore darkness, but now light in the Lord. Walk...as children of the light." Therefore the New Law had to forbid certain external acts and prescribe others.
I answer that, As stated above (Q106, AA1,2), the New Law consists chiefly in the grace of the Holy Ghost, which is shown forth by faith that worketh through love. Now men become receivers of this grace through God's Son made man, Whose humanity grace filled first, and thence flowed forth to us. Hence it is written (Jn. 1:14): "The Word was made flesh," and afterwards: "full of grace and truth"; and further on: "Of His fulness we all have received, and grace for grace." Hence it is added that "grace and truth came by Jesus Christ." Consequently it was becoming that the grace flows from the incarnate Word should be given to us by means of certain external sensible objects; and that from this inward grace, whereby the flesh is subjected to the Spirit, certain external works should ensue.
Accordingly external acts may have a twofold connection with grace. In the first place, as leading in some way to grace. Such are the sacramental acts which are instituted in the New Law, e.g. Baptism, the Eucharist, and the like. In the second place there are those external acts which ensue from the promptings of grace: and herein we must observe a difference. For there are some which are necessarily in keeping with, or in opposition to inward grace consisting in faith that worketh through love. Such external works are prescribed or forbidden in the New Law; thus confession of faith is prescribed, and denial of faith is forbidden; for it is written (Mt. 10:32,33) "(Every one) that shall confess Me before men, I will also confess him before My Father...But he that shall deny Me before men, I will also deny him before My Father." On the other hand, there are works which are not necessarily opposed to, or in keeping with faith that worketh through love. Such works are not prescribed or forbidden in the New Law, by virtue of its primitive institution; but have been left by the Lawgiver, i.e. Christ, to the discretion of each individual. And so to each one it is free to decide what he should do or avoid; and to each superior, to direct his subjects in such matters as regards what they must do or avoid. Wherefore also in this respect the Gospel is called the "law of liberty" [*Cf. Reply Obj.2]: since the Old Law decided many points and left few to man to decide as he chose.
Reply Obj. 1: The kingdom of God consists chiefly in internal acts: but as a consequence all things that are essential to internal acts belong also to the kingdom of God. Thus if the kingdom of God is internal righteousness, peace, and spiritual joy, all external acts that are incompatible with righteousness, peace, and spiritual joy, are in opposition to the kingdom of God; and consequently should be forbidden in the Gospel of the kingdom. On the other hand, those things that are indifferent as regards the aforesaid, for instance, to eat of this or that food, are not part of the kingdom of God; wherefore the Apostle says before the words quoted: "The kingdom of God is not meat and drink."
Reply Obj. 2: According to the Philosopher (Metaph. i, 2), what is "free is cause of itself." Therefore he acts freely, who acts of his own accord. Now man does of his own accord that which he does from a habit that is suitable to his nature: since a habit inclines one as a second nature. If, however, a habit be in opposition to nature, man would not act according to his nature, but according to some corruption affecting that nature. Since then the grace of the Holy Ghost is like an interior habit bestowed on us and inclining us to act aright, it makes us do freely those things that are becoming to grace, and shun what is opposed to it.
Accordingly the New Law is called the law of liberty in two respects. First, because it does not bind us to do or avoid certain things, except such as are of themselves necessary or opposed to salvation, and come under the prescription or prohibition of the law. Secondly, because it also makes us comply freely with these precepts and prohibitions, inasmuch as we do so through the promptings of grace. It is for these two reasons that the New Law is called "the law of perfect liberty" (James 1:25).
Reply Obj. 3: The New Law, by restraining the mind from inordinate movements, must needs also restrain the hand from inordinate acts, which ensue from inward movements.
^Q. 108 Art. 2: Whether the New Law made sufficient ordinations about external acts?
It would seem that the New Law made insufficient ordinations about external acts.
Obj. 1: Because faith that worketh through charity seems chiefly to belong to the New Law, according to Gal. 5:6: "In Christ Jesus neither circumcision availeth anything, nor uncircumcision: but faith that worketh through charity." But the New Law declared explicitly certain points of faith which were not set forth explicitly in the Old Law; for instance, belief in the Trinity. Therefore it should also have added certain outward moral deeds, which were not fixed in the Old Law.
Obj. 2: Further, in the Old Law not only were sacraments instituted, but also certain sacred things, as stated above (Q101, A4; Q102, A4). But in the New Law, although certain sacraments are instituted by Our Lord; for instance, pertaining either to the sanctification of a temple or of the vessels, or to the celebration of some particular feast. Therefore the New Law made insufficient ordinations about external matters.
Obj. 3: Further, in the Old Law, just as there were certain observances pertaining to God's ministers, so also were there certain observances pertaining to the people: as was stated above when we were treating of the ceremonial of the Old Law (Q101, A4; Q102, A6). Now in the New Law certain observances seem to have been prescribed to the ministers of God; as may be gathered from Mt. 10:9: "Do not possess gold, nor silver, nor money in your purses," nor other things which are mentioned here and Lk. 9,10. Therefore certain observances pertaining to the faithful should also have been instituted in the New Law.
Obj. 4: Further, in the Old Law, besides moral and ceremonial precepts, there were certain judicial precepts. But in the New Law there are no judicial precepts. Therefore the New Law made insufficient ordinations about external works.
On the contrary, Our Lord said (Mt. 7:24): "Every one...that heareth these My words, and doth them, shall be likened to a wise man that built his house upon a rock." But a wise builder leaves out nothing that is necessary to the building. Therefore Christ's words contain all things necessary for man's salvation.
I answer that, as stated above (A1), the New Law had to make such prescriptions or prohibitions alone as are essential for the reception or right use of grace. And since we cannot of ourselves obtain grace, but through Christ alone, hence Christ of Himself instituted the sacraments whereby we obtain grace: viz. Baptism, Eucharist, Orders of the ministers of the New Law, by the institution of the apostles and seventy-two disciples, Penance, and indissoluble Matrimony. He promised Confirmation through the sending of the Holy Ghost: and we read that by His institution the apostles healed the sick by anointing them with oil (Mk. 6:13). These are the sacraments of the New Law.
The right use of grace is by means of works of charity. These, in so far as they are essential to virtue, pertain to the moral precepts, which also formed part of the Old Law. Hence, in this respect, the New Law had nothing to add as regards external action. The determination of these works in their relation to the divine worship, belongs to the ceremonial precepts of the Law; and, in relation to our neighbor, to the judicial precepts, as stated above (Q99, A4). And therefore, since these determinations are not in themselves necessarily connected with inward grace wherein the Law consists, they do not come under a precept of the New Law, but are left to the decision of man; some relating to inferiors--as when a precept is given to an individual; others, relating to superiors, temporal or spiritual, referring, namely, to the common good.
Accordingly the New Law had no other external works to determine, by prescribing or forbidding, except the sacraments, and those moral precepts which have a necessary connection with virtue, for instance, that one must not kill, or steal, and so forth.
Reply Obj. 1: Matters of faith are above human reason, and so we cannot attain to them except through grace. Consequently, when grace came to be bestowed more abundantly, the result was an increase in the number of explicit points of faith. On the other hand, it is through human reason that we are directed to works of virtue, for it is the rule of human action, as stated above (Q19, A3; Q63, A2). Wherefore in such matters as these there was no need for any precepts to be given besides the moral precepts of the Law, which proceed from the dictate of reason.
Reply Obj. 2: In the sacraments of the New Law grace is bestowed, which cannot be received except through Christ: consequently they had to be instituted by Him. But in the sacred things no grace is given: for instance, in the consecration of a temple, an altar or the like, or, again, in the celebration of feasts. Wherefore Our Lord left the institution of such things to the discretion of the faithful, since they have not of themselves any necessary connection with inward grace.
Reply Obj. 3: Our Lord gave the apostles those precepts not as ceremonial observances, but as moral statutes: and they can be understood in two ways. First, following Augustine (De Consensu Evang. 30), as being not commands but permissions. For He permitted them to set forth to preach without scrip or stick, and so on, since they were empowered to accept their livelihood from those to whom they preached: wherefore He goes on to say: "For the laborer is worthy of his hire." Nor is it a sin, but a work of supererogation for a preacher to take means of livelihood with him, without accepting supplies from those to whom he preaches; as Paul did (1 Cor. 9:4, seqq.).
Secondly, according to the explanation of other holy men, they may be considered as temporal commands laid upon the apostles for the time during which they were sent to preach in Judea before Christ's Passion. For the disciples, being yet as little children under Christ's care, needed to receive some special commands from Christ, such as all subjects receive from their superiors: and especially so, since they were to be accustomed little by little to renounce the care of temporalities, so as to become fitted for the preaching of the Gospel throughout the whole world. Nor must we wonder if He established certain fixed modes of life, as long as the state of the Old Law endured and the people had not as yet achieved the perfect liberty of the Spirit. These statutes He abolished shortly before His Passion, as though the disciples had by their means become sufficiently practiced. Hence He said (Lk. 22:35,36) "When I sent you without purse and scrip and shoes, did you want anything? But they said: Nothing. Then said He unto them: But now, he that hath a purse, let him take it, and likewise a scrip." Because the time of perfect liberty was already at hand, when they would be left entirely to their own judgment in matters not necessarily connected with virtue.
Reply Obj. 4: Judicial precepts also, are not essential to virtue in respect of any particular determination, but only in regard to the common notion of justice. Consequently Our Lord left the judicial precepts to the discretion of those who were to have spiritual or temporal charge of others. But as regards the judicial precepts of the Old Law, some of them He explained, because they were misunderstood by the Pharisees, as we shall state later on (A3, ad 2).
^Q. 108 Art. 3: Whether the New Law directed man sufficiently as regards interior actions?
It would seem that the New Law directed man insufficiently as regards interior actions.
Obj. 1: For there are ten commandments of the decalogue directing man to God and his neighbor. But Our Lord partly fulfilled only three of them: as regards, namely, the prohibition of murder, of adultery, and of perjury. Therefore it seems that, by omitting to fulfil the other precepts, He directed man insufficiently.
Obj. 2: Further, as regards the judicial precepts, Our Lord ordained nothing in the Gospel, except in the matter of divorcing of wife, of punishment by retaliation, and of persecuting one's enemies. But there are many other judicial precepts of the Old Law, as stated above (Q104, A4; Q105). Therefore, in this respect, He directed human life insufficiently.
Obj. 3: Further, in the Old Law, besides moral and judicial, there were ceremonial precepts about which Our Lord made no ordination. Therefore it seems that He ordained insufficiently.
Obj. 4: Further, in order that the mind be inwardly well disposed, man should do no good deed for any temporal end whatever. But there are many other temporal goods besides the favor of man: and there are many other good works besides fasting, alms-deeds, and prayer. Therefore Our Lord unbecomingly taught that only in respect of these three works, and of no other earthly goods ought we to shun the glory of human favor.
Obj. 5: Further, solicitude for the necessary means of livelihood is by nature instilled into man, and this solicitude even other animals share with man: wherefore it is written (Prov. 6:6,8): "Go to the ant, O sluggard, and consider her ways...she provideth her meat for herself in the summer, and gathereth her food in the harvest." But every command issued against the inclination of nature is an unjust command, forasmuch as it is contrary to the law of nature. Therefore it seems that Our Lord unbecomingly forbade solicitude about food and raiment.
Obj. 6: Further, no act of virtue should be the subject of a prohibition. Now judgment is an act of justice, according to Ps. 18:15: "Until justice be turned into judgment." Therefore it seems that Our Lord unbecomingly forbade judgment: and consequently that the New Law directed man insufficiently in the matter of interior acts.
On the contrary, Augustine says (De Serm. Dom. in Monte i, 1): We should take note that, when He said: "'He that heareth these My words,' He indicates clearly that this sermon of the Lord is replete with all the precepts whereby a Christian's life is formed."
I answer that, As is evident from Augustine's words just quoted, the sermon, contains the whole process of forming the life of a Christian. Therein man's interior movements are ordered. Because after declaring that his end is Beatitude; and after commending the authority of the apostles, through whom the teaching of the Gospel was to be promulgated, He orders man's interior movements, first in regard to man himself, secondly in regard to his neighbor. This he does in regard to man himself, in two ways, corresponding to man's two interior movements in respect of any prospective action, viz. volition of what has to be done, and intention of the end. Wherefore, in the first place, He directs man's will in respect of the various precepts of the Law: by prescribing that man should refrain not merely from those external works that are evil in themselves, but also from internal acts, and from the occasions of evil deeds. In the second place He directs man's intention, by teaching that in our good works, we should seek neither human praise, nor worldly riches, which is to lay up treasures on earth. Afterwards He directs man's interior movement in respect of his neighbor, by forbidding us, on the one hand, to judge him rashly, unjustly, or presumptuously; and, on the other, to entrust him too readily with sacred things if he be unworthy.
Lastly, He teaches us how to fulfil the teaching of the Gospel; viz. by imploring the help of God; by striving to enter by the narrow door of perfect virtue; and by being wary lest we be led astray by evil influences. Moreover, He declares that we must observe His commandments, and that it is not enough to make profession of faith, or to work miracles, or merely to hear His words.
Reply Obj. 1: Our Lord explained the manner of fulfilling those precepts which the Scribes and Pharisees did not rightly understand: and this affected chiefly those precepts of the decalogue. For they thought that the prohibition of adultery and murder covered the external act only, and not the internal desire. And they held this opinion about murder and adultery rather than about theft and false witness, because the movement of anger tending to murder, and the movement of desire tending to adultery, seem to be in us from nature somewhat, but not the desire of stealing or bearing false witness. They held a false opinion about perjury, for they thought that perjury indeed was a sin; but that oaths were of themselves to be desired and to be taken frequently, since they seem to proceed from reverence to God. Hence Our Lord shows that an oath is not desirable as a good thing; and that it is better to speak without oaths, unless necessity forces us to have recourse to them.
Reply Obj. 2: The Scribes and Pharisees erred about the judicial precepts in two ways. First, because they considered certain matters contained in the Law of Moses by way of permission, to be right in themselves: namely, divorce of a wife, and the taking of usury from strangers. Wherefore Our Lord forbade a man to divorce his wife (Mt. 5:32); and to receive usury (Lk. 6:35), when He said: "Lend, hoping for nothing thereby."
In another way they erred by thinking that certain things which the Old Law commanded to be done for justice's sake, should be done out of desire for revenge, or out of lust for temporal goods, or out of hatred of one's enemies; and this in respect of three precepts. For they thought that desire for revenge was lawful, on account of the precept concerning punishment by retaliation: whereas this precept was given that justice might be safeguarded, not that man might seek revenge. Wherefore, in order to do away with this, Our Lord teaches that man should be prepared in his mind to suffer yet more if necessary. They thought that movements of covetousness were lawful on account of those judicial precepts which prescribed restitution of what had been purloined, together with something added thereto, as stated above (Q105, A2, ad 9); whereas the Law commanded this to be done in order to safeguard justice, not to encourage covetousness. Wherefore Our Lord teaches that we should not demand our goods from motives of cupidity, and that we should be ready to give yet more if necessary. They thought that the movement of hatred was lawful, on account of the commandments of the Law about the slaying of one's enemies: whereas the Law ordered this for the fulfilment of justice, as stated above (Q105, A3, ad 4), not to satisfy hatred. Wherefore Our Lord teaches us that we ought to love our enemies, and to be ready to do good to them if necessary. For these precepts are to be taken as binding