At once, it is apparent that Christ's teaching is universal. It applies to the way we should treat all men (human beings), ἄνθρωποι,
homines. It is an ethic that spreads out beyond the confines of Israel, and those followers of Jesus that were to become the new, spiritual Israel, that is, those members of his Church. This Golden Rule should govern Christians' relationship with all men, including non-believers. Implied by this universal ethic is that the behavior of all men, regardless of whether they are followers of Christ, ought to be similarly so bound. That is, Christ appears clearly to nestle this teaching as part of the natural law in addition to being part of the Law and the Prophets, though he clearly expects us to act beyond it. The Gospel of Matthew, traditionally thought to be aimed at a Jewish audience, stresses the Golden Rule's link with the Law and the Prophets. If it includes the Law and the Prophets, then it includes the natural law that is positively promulgated in the Law and the Prophets. Luke, on the other hand, aimed at a Gentile audience, does not mention the link of the Golden Rule with the Mosaic law. Other than this, the Matthean and Lucan formulations do not seem to be significantly different, though the Matthean version seems more substantive (what is to be done), and the Lucan verison more procedural (how it is to be done) in emphasis.
Good Samaritan: Stained Glass Window by Marc Chagall
The other apparent thing is that Christ's formulation of the Golden Rule is affirmative in nature:
do unto others as you would have them do unto you. It is not the negative formulation which we saw reflected in the Book of Tobit or in Rabbi Hillel:
do not do to others what you would not have them do to you. The affirmative formulation appears to impose affirmative obligations or duties on behavior; whereas the negative formulation appears to impose
restrictions on behavior. Both formulations, however, equally require a self-assessment as part of the ethical life. There is a suggestion, then, that our inner life is not so damaged by the Fall so that it is no longer indicative of right. Christ rejects any notion of a Calvinistic total depravity. We have still, even after Adam's Fall, somewhat of a reliable inner moral compass. Things we
wish tell us how we should act towards others. This suggests that our
wishes have some
objective standard which they reference, to wit, the natural law. But our
wishes are not whims, as they must be understood within the difficult ethic of the Beatitudes, a teaching which immediately precedes that handing down of the Golden Rule, which call the disciples of Christ to a supernaturally-based ethic, and within which that rule must be understood.
Perhaps most striking of all is that, when these formulations of the Golden Rule are viewed within the contexts of the greater sermons of which they are part, Christ takes us out of the ethical realm of justice, into the entirely new ethical realm of love, and love of that certain, rigorous kind:
caritas or
agape. It is clear that the Golden Rule as envisioned by Christ is more than: "Do justice!" It is: "Love!" It is, in fact, a justice that requires us to bear injustice in a manner so as to redeem it. And so we cannot simply stop at the words of the Golden Rule itself, we must explore their context, and we must explore it within the life of Christ, who was the personification of that Golden Rule, its end and its fulfillment. Ultimately, the Golden Rule, at least for a Christian, is the
imitatio Christi. Since this requires the supernatural life of Grace, it suggests that Christ's formulation of the Golden Rule has both natural and supernatural aspects to it.
Sermon on the Mount by Fra Angelico The Sermon on the Mount is found in Chapters 5 through 7 of the Gospel of Matthew. The event receives relatively lengthy treatment by Matthew, representing approximately ten percent of the Gospel. And so it should, as the Sermon on the Mount presents "the perfect standard of the Christian life,"
ad mores optimos pertinet, perfectum vitae christianae modum. St. Aug.,
D. Serm. Dom. in Monte, 1.1. The Golden Rule comes towards the end of the Sermon on the Mount. Crowds are gathered in the areas, drawn by the reputation of Jesus for healing the sick, and somewhere near Capernaum Jesus climbs a hillside to address his disciples, it appears separate from the crowds, though there is some ambiguity about it. These are the teachings for his followers. He begins with the counter-intuitive Beatitudes. I say counter-intuitive, but that is not necessarily so. The Beatitudes are all tied to the reality of eternal life after this temporal life, and, if life after judgment is part of the moral equation, then counter-intuitiveness disappears. Though they clearly reference eternity, the Beatitudes "respond to the desire for happiness that God has placed in the human heart," Catechism of the Catholic Church, § 1725, a desire which extends beyond this life. The Beatitudes are counter-intuitive only to a materialist.
Jesus names as blessed or happy--
beatus or μακάριοι--the poor in spirit, those who mourn, those who hunger or thirst for justice, who are persecuted, the meek, the merciful, the pure of heart, the peacemakers. It follows that we should be poor in spirit, mourn, hunger and thirst for justice, expect persecution, be meek, merciful, pure of heart, and become peacemakers. St. Augustine ties these beatitudes to the Isaiahan gifts of the Holy Spirit (Isa. 11:2-3): he attaches fear to humility, the poor in spirit; piety to the meek; knowledge to those that mourn; fortitude to those who hunger and thirst; counsel to those who are merciful; understanding to those who are pure of heart; and wisdom to those who are peacemakers.
D. Serm. Dom. in Monte, 4.11. St. Augustine has an interesting perspective on Christ's beatitude regarding the peacemakers:
"Blessed are the peacemakers: for they shall be called the children of God." [Matt. 5:9] It is the perfection of peace [in pace perfectio est], where nothing offers opposition; and the children of God are peacemakers, because nothing resists God, and surely children ought to have the likeness of their father. Now, they are peacemakers in themselves who, by bringing in order all the motions of their soul, and subject them to reason--i.e., to the mind and spirit--and by having their carnal lusts thoroughly subdued, become a kingdom of God [edomitas fiunt regnum Dei]: in which all things are so arranged, that that which is chief and pre-eminent in man rules without resistance over the other elements, which are common to us with the beats; and that very element which is pre-eminent in man, i.e., mind and reason, is brought under subjection to something better still, which is the truth itself, the only-begotten Son of God. For a man is not able to rule over things which are inferior, unless he subjects himself to what is superior. And this is the peace which is given on earth to men of goodwill; this is the life of the fully developed and perfect wise man.
D. Serm. Dom. in Monte, 2.9. Christ's teachings are not ordinary teachings, they are divine; and those who adopt them will be markedly different from the mass of men. They will be as salt, which flavors the bland, and preserves meat. They will be as light on a hilltop, which dispels darkness and gives guidance to one who journeys from afar.
As if to make clear the unique yet the traditional basis of his teaching, Jesus expounds the Law next. There is no question of the Law's abrogation, but of its fulfillment. "Do not think that I am come to destroy the law, or the prophets. I am not come to destroy, but to fulfill. For amen I say unto you, till heaven and earth, one jot, or one tittle shall not pass of the law, till all be fulfilled." Matt. 5:17-18. St. Augustine sees this sentence as containing two meanings:
In this sentence the meaning is twofold. We must deal with it both ways. For he who says, "I am not come to destroy the law, but to fulfill," means it either in the way of adding what is wanting, or of doing what is in it [aut addendo dicit quod minus habet aut facideno quod habet]. Let us then consider that first which I have put first: for he who adds what is wanting does not surely destroy what he finds, but rather confirms it by perfecting it; . . . For, even if those things which are added for completion are fulfilled, much more are those things fulfilled which are sent in advance as a commencement [Dum enim fiunt etiam illa quae adduntur ad perfectionem, multo magis fiunt illa quae praemissa sunt ad inchoationem]."
D. Serm. Dom. in Monte, 8.20. The Commandments remain binding on Christ's disciples. Matt. 5:19. Not only are they binding, they must be internalized, expanded, broadened so that they govern more than external acts: we are to govern our innermost dispositions by force of law. Christ demands that our righteousness exceed that of the scribes and Pharisees. What Christ means by this is that
unless you shall fulfill not only those least precepts of the law which begin the man, [inchoant hominem], but also those which are added by me, who am not come to destroy the law, but to fulfill it, you shall not enter into the kingdom of heaven.
nisi non solum illa minima legis praecepta impleveritis quae inchoant hominem, sed etiam ista quae a me adduntur, qui non veni solvere legem sed implere,non intrabitis in regnum caelorum.
D. Serm. Dom. in Monte, 9.21. We are then to go beyond the minimal precepts of the natural law, the law which is the inchoate law of man,
quae inchoant hominem. We are to be as perfect as our heavenly Father is perfect. Matt. 5:48. And this requires
metanoia, conversion, belief in Christ and the will to follow him, all of which clearly require prevenient, actual, and sanctifying grace. The promises contained in the Beatitudes are a gratuitous gift of God, they are supernatural, as is the grace that leads us to the kingdom beyond this earth to which they beckon. They set standards for the supernatural law of grace, for the right loving of God, and for the "use of earthly things in keeping with the law of God." Catechism of the Catholic Church, §§ 1727-9.
In instituting his new law, Christ fulfills the Law and the Prophets, and does not abrogate the Mosaic law in its fundamentals, nor the natural law. He does, however, abrogate some law. He abrogates that positive law of Moses that allowed divorce, and stiffens up the marriage law so that it was as it was in the beginning. Disciples simply are not allowed to have the hardness of heart that excused the Mosaic accommodation.
A similar change of heart is demanded of the disciples in regard to their dealings with men. Christ disdains personal vengeance, and even the desire for personal vengeance, and this even in the face of gross injustice, and manifestly wrongful imposition, unfair advantage, or exploitation by their fellow men. In the most extreme way, Jesus clearly rejects any
Vergeltunsgedenken-- the ethic of loving one's friends, and hating one's enemies. This thinking had perhaps crept into the thinking of the Jew in Palestine through Hellenistic influence, since the principle is extraneous to the Law and the Prophets.
You have heard that it hath been said, Though shalt love they neighbor, and hate they enemy. But I say to you, Love your enemies: do good to them that hate you: and pray for them that prosecute and calumniate you.
Matt. 5:43-44. We are to avoid hypocrisy and moral ostentation or display, and so alms should be given in secret, fasting, and prayer should be in secret. The Lord then teaches his disciples the
Pater noster, Matt. 6:9-13. He requires us to forgive those who sin against us, under the penalty of not having our own sins forgiven, a serious sanction indeed. Matt. 6:14-15. We are to avoid setting our sights on temporal wealth, at least to the extent that it occupies our heart or claims mastery over us. Of these temporal things, we are, at least from an internal standpoint, to be almost dangerously carefree, so great ought to be our trust in the divine Providence. We are not privy to the heart of other men, hardly even our own, and so we ought to withhold judgment. Matt. 7:1-2. We are to shun hypocrisy. Matt. 7:3-5. We ought to implore God for his good gifts, confident he will answer. Matt. 7:6-11. It is after all these moral teachings that Christ brings out the Golden Rule: "All things therefore whatsoever you would that men should do to you, do also to them. For this is the law and the prophets." Matt. 7:12. Christ continues: this is no easy law: "Enter ye in at the narrow gate: for wides is the gate, and broad is the way that leadeth to destruction, and many there are who go in thereat. How narrow is the gate, and strait is the way that leadeth to life: and few there are that find it!" Matt. 7:13-14.
According to the Gospel of Luke, Christ gives a shorter, similar sermon while standing "in a plain place," in the company of his disciples and a crowd. Again, the crowds were attracted by Christ's reputation in the healing of diseases and the casting out of demons. Christ similarly starts his discourse with a shortened version of the Beatitudes: Blessed are the poor, those than hunger, those that weep, those that are hated for the sake of belief in Christ. It is to be expected, and, in the light of eternity, such temporal evil is essentially nothing. Luke 6:21-25. Christ follows his Beatitudes with analogous woes: Woe to those who are rich, who are filled, who laugh, who are blessed because they have rejected Christ. Luke 6:26-28. Again, Christ demands an internal apathy to the goods of this world, to such a degree that if struck on one cheek, we ought to have the disposition to offer the other. If cursed, we ought to pray for the one cursing. If unjustly dispossessed of a cloak, we ought to have no internal qualm at letting our coat be taken. Within this context, Jesus offers the Golden Rule: "And as you would that men should do to you, do you also to them in like manner." Luke 6:31. The disciples of Christ are expected to have a norm of behavior that exceeds, that is, transcends, the natural law. And for this, clearly supernatural Grace is required, as Grace is even required, under our post-lapsarian nature, to abide by the natural law.
In its most rigorously applied sense, the Golden Rule of Christ is sublime. Though it does not contradict the natural law, it certainly calls the disciple way beyond it, indeed to the point of natural absurdity. The natural law does not require that one suffer injustice passively, or have an attitude that would welcome even more injustice. The natural law does not demand that one allow a thief to take his cloak, and certainly not to add insult to injury by giving the thief his coat, or by developing an attitude that would welcome it. It does not oblige us to give our possessions to whoever asks for them. It does not enjoin us from striking in self defense at the man who would strike us, much less cheerfully offering that he injure us more. The natural law may, indeed, permit the that we battle injustice, that we effect punishment, that we demand restitution; and, in some cases actually demand that we do these things. It permits and sometimes requires us to fight injustice, to resist theft, to guard our possessions, and to defend our life and that of our family against an unjust aggressor, to fight a war that is just by just means. The natural law allows and sometimes demands that a party exercise judgment, enforce just punishment, and, in appropriate cases, even capital punishment. The natural law allows us reasonably to favor our family, our neighborhood, our country, above others, though not at others' exclusion. These things cannot be regarded as moral evils, and in fact are frequently morally compelled, as long as they follow the rule of reason, an ethic which is difficult enough. The natural law is what makes us men, and Christ did not come to un-men us. To suggest that Christ's teachings contradict the natural moral law is plain heresy, as it assumes a contradiction in the legislation of God, and division between the God of Creation and the God of Redemption. It is a Gnosticism, a vicious dualism of sorts.
And yet, there is something
different in Christ's teaching that cannot be disregarded, but it must be rightly understood, in that it is ensconced in Semitic hyperbole, and so must not be literally understood. We are not morally compelled physically to pluck out our eyes if our eyes cause us to sin (Matt. 18:9); else all Christ's disciples would, like Oedipus, run around blind. Similarly, we would be slaves to the will of others, particularly the unjust who would demand all our goods, all our labor, and abuse our physical integrity. Christ's disciples would be slaves to the unjust, pawns of evil, if his statements to offer the other cheek, to give up their coat to the man who pilfered their tunic through suit, to labor in servitude for two miles, when they had already been wrongfully recruited to walk one were to be taken literally. Indeed, as St. Augustine points out, Christ himself did not follow these teachings literally, though it cannot even be entertained that he failed to act in complete integrity with his moral teachings:
But in truth, the Lord Himself, who was certainly the first to fulfill the precepts which He taught, did not offer the other cheek to the servant of the high priest when smiting Him thereon; but, so far from that, said, "If I have spoken evil, hear the witness of the evil; but if well, why do you smite me?" [John 18:23] Yet was He not on that account unprepared in heart, for the salvation of all, not merely to be smitten on the other cheek, but even to have His whole body crucified.
At vero ipse Dominus, qui utique praecepta quae docuit primus implevit, percutienti se in maxillam ministro sacerdotis non praebuit alteram sed insuper dixit: Si male locutus sum, exprobra de malo; si bene, quid me caedis? Non tamen ideo paratus corde non fuit non solum in alteram maxillam caedi pro salute omnium, sed etiam toto corpore crucifigi.
D. Serm. Dom. in Monte, 19.58. If literal compliance with these injunctions is not what Christ intended, then what is it that Christ intended to teach?
St. Augustine addresses the facially controversial teaching of Our Lord regarding how his disciples are to act when confronting injustice. Unquestionably, the Lord is demanding something supernatural from his disciples. Their righteousness must exceed that of the Pharisees, and that is to say by implication that it must exceed that of the Mosaic law, and, by further implication, that of the natural law. In coming to grips with the meaning of Christ's teaching, St. Augustine distinguishes between the unjust act itself--whether it be a physical assault that results in the loss of an eye, or a tooth, or a struck cheek, or whether it is an unjust appropriation of personal property, or of personal services, or anything else for that matter--, and the response to it. In terms of the response to an unjust act, St. Augustine distinguishes between the
internal attitude and the
external response. He also distinguishes between those sorts of injuries that allow for compensation or restitution of property, money, or labor, and those that do not, and only allow for punishment.
St. Augustine notes that Christ's moral teachings would prohibit a man from intentionally committing an act of injustice against another, and so all men would by natural law and Christ's teaching be prohibited from intentionally assaulting another so as to remove an eye, or a tooth, or to steal his cloak, to slap his cheek, or force him to walk a mile. "[A]ny one who is the first to do harm to another, with the desire of inuring and hurting him," stands at the farthest end of injustice.
D. Serm. Dom. in Monte, 19.57.
In terms of the proper
response to an act of injustice as taught by Jesus, St. Augustine distinguishes various levels of responses.
First off, in responding to an injustice, it would obviously be unjust to exact from the wrongdoer
more than the wrong he inflicted, that is, it is unjust to exact a disproportionately
greater punishment or greater compensation from the wrongdoer than the wrongful act itself. Thus, it would be unjust to demand two eyes for the loss of one eye. This disproportionate response is clearly prohibited by Christ's teaching.
Secondly, one could demand from the wrongdoer proportionate punishment or compensation. This is the "lesser righteousness" (
iustitia minor) of the Pharisees (and the natural law), which requires us "not to go beyond measure in revenge,"
non excedere in vindicta modum. D. Serm. Dom. in Monte, 19.56; that is, any response would be in proportion to the wrong done. The Mosaic law ("eye for and eye, and tooth for a tooth") as well as the natural law demands proportionality between the wrong and either compensation or punishment. Yet it must be recognized that this requirement is an "incomplete, by no means severe, but merciful justice,"
inchoatam non severam sed misericordem iustitiam. 19.56. Proportionality is a "merciful justice" because he who is punished or required to compensate in an amount equivalent to the wrong done still obtains a measure of forgiveness, "for the party who injures does not deserve merely as much punishment as the man who was injured by him has innocently suffered,"
poenam meretur nocens quantam ille qui ab eo laesus innocens passus est. 19.57.
Going beyond a proportionate response, one may envision a person who exacts less punishment or less compensation from a wrongdoer than the wrong inflicted, say one blow instead of two. But such a person, though he exceeds the
minor iustitia of the Pharisees and scribes, still "does not come fully up to that magnitude of the precept which belongs to the kingdom of heaven." 19.57. Even he who demands
nothing in terms of punishment or compensation "approaches the Lord's precept, but yet he does not reach it."
For still it seems to the Lord not enough, if, for the evil which you may have received, you should inflict no evil in return, unless you be prepared to receive even more.
Parum enim adhuc videtur Domino, si pro malo quod acceperis nihil rependas mali, nisi etiam amplius sis paratus accipere.
What more does Christ require of us? Christ demands from his followers an internal attitude such that not only would they not exact
any punishment or compensation from the wrongdoer, but that they would be open to additional insult. They are to have the tolerant, welcoming attitude toward the wrongdoer that one has to another that he loves, an attitude such as a mother has to her infant children, a man to a friend who is sick, or a guardian to his mentally incompetent ward, "at whose hands they often endure many things."
And if their welfare demand it, they even show themselves ready to endure more, until the weakness either of age or of disease pass away. And so, as regards those whom the Lord, the Physician of souls, was instructing to take care of their neighbors, what else could He teach them, than that they endure quietly the infirmities of those whose welfare they wish to consult? For all wickedness arises from infirmity of mind: because nothing is more harmless than the man who is perfect in virtue.
D. Serm. Dom. in Monte, 19.57. Christ therefore asks such equanimity of attitude that, when confronted with injustice, not only would we not demand equivalent compensation or punishment, or no compensation or punishment: we must develop the attitude that would accept, even welcome, additional injustice. "My heart is prepared, O God, my heart is prepared."
Paratum cor meum, Deus, paratum cor meum.
D. Serm. Dom. in Monte, 19.58.
The internal disposition is what is at the heart of Christ's teaching. Jesus is not teaching a literal compliance. If he were teaching such literal compliance, then one who has learned to offer the other cheek, to walk another mile, to allow the taking of his coat, would satisfy Christ's requirement, even though he has not developed love toward the wrongdoer. But many have learned to live with injustice whose souls rankle toward their wrongdoers. "For many have learned how to offer the other cheek, but do not know how to love him by whom they are struck." 19.58. What if someone struck us in the arm, are we excused from Christ's law because we were not assaulted on the face? Clearly, these precepts have "reference to the preparation of heart, not to a vain show of outward deed,"
ad praeparationem cordis non ad ostentationem operis praeceptum recte intellegitur. One is not obliged literally to walk a mile on foot, but one should be "prepared in mind to do it." 19.61. Moreover, the obligation applies not just to the matters mentioned, but "everything which on any ground of right we speak of as being ours in time,"
in omnibus faciendum est quae aliquo iure temporaliter nostra esse dicimus. 19.59. What is required of the disciple is an attitude of equanimity (
aequo animo tolerarare) regardless of what is wrongfully forced upon him.
But does this internal attitude require external equivalent? Despite this mental attitude, must we physically or literally allow ourselves to receive greater insult? The answer is no as long as the good of the wrongdoer or the common good is regarded. In approaching this question, Augustine distinguishes between those sorts of injuries that can be compensated and those that cannot. 20.62. Alternatively, he distinguishes wrongs that can be compensated only by punishment and not restitution (assault=being struck on the cheek), by restitution only (wrongful suit=taking the cloak through judicial process), or by both restitution and punishment (forcing another to walk two miles without judicial process). 20.66. But regardless of the type of wrong: "In all these classes . . . the Lord teaches that the disposition of a Christian ought to be most patient and compassionate, and thoroughly prepared to endure more." 20.66.
In confronting those situations where punishment is the only remedy, the Christian is not precluded from obtaining inflicting punishment "as avails for correction (q
uae ad correctionem valet), and as compassion itself dictates (
pertinet ad misericordiam)." 20.62. We are, however, to inflict punishment with the same attitude that a mother corrects her child, or a father his son, or God his own. 19.63.
No more, therefore, is sought for, except that he should punish to whom, in the natural order of things, the power is given; and that he should punish with the same goodwill which a father has towards his little son, whom by reason of his youth he cannot yet hate. For from this source the most suitable example is drawn, in order that it may be sufficiently manifest that sin can be punished in love rather than be left unpunished; so that one may wish him on whom he inflicts it not to be miserable by means of punishment, but to be happy by means of correction, yet be prepared, if need be, to endure with equanimity more injuries inflicted by him whom he wishes to be corrected, whether he may have the power of putting restraint upon him or not.
D. Serm. Dom. in Monte, 20.63.
Hence, in this class of injuries which is atoned for by punishment, such a measure will be preserved by Christians, that, on an injury being received, the mind will not mount up into hatred, but will be ready, in compassion for the infirmity, to endure even more; nor will it neglect the correction, which it can employ either by advice, or by authority, or by [the exercise of] power.
D. Serm. Dom. in Monte, 20.66.
In regard to those injuries which may be compensated for by restitution, whether in labor or money. The Christian may seek compensation from the wrongdoer, but in doing the Lord requires that the Christian be
patientissimum et misericordissimum et ad plura perferenda paratissimum, "most patient and compassionate, and thoroughly prepared to endure more." 20.66.
Love is at the heart of Christ's moral teaching. Without love, compliance with the Law of Christ is impossible. "For without this love, wherewith we are commanded to love even our enemies and persecutors, who can fully carry out those things?"
St. Augustine, D. Serm. Dom. in Monte, 21.69. For this reason, Jesus instructs us to be perfect, as God who is love is perfect. "Yet in such a way that God is understood to be perfect as God, and the soul to be perfect as a soul,"
Deus . . . perfectus tamquam Deus, et anima perfecta tamquam anima. 21.69.
In discussing the part of Jesus' Sermon on the Mount that invokes the Golden Rule in his
Commentary on the Sermon on the Mount, St. Augustine again begins at the lowest end of the spectrum of righteousness and climbs to the highest demand of the Lord. At the lowest end would be a misanthrope or a spoiled child, who hates even those who love him. "That man therefore rises a certain step," from this lower rung, "who loves his neighbor, although as yet he hates his enemy." To St. Augustine, this is the righteousness of the Pharisee, that is of the Mosaic law, which allowed the hatred of one's enemies.
Cf. Deut. 7:2. It is an ethic that is available to the Heathen. It is not, however, in keeping with the real tenor of the Old Testament revelation, nor even with the natural law. Any preferential ethic in the Mosaic dispensation is to be "understood as the voice of command addressed to a righteous man, but rather as the voice of permission to a weak man." 21.70. That is to say that both the natural law and the Torah would in their full rigor reject a
Vergeltungsgedenken and would demand a prudential sort of Golden Rule. But we are to go significantly beyond that, and Christ, who is the end of the law, and the fulfillment of it, does exactly that, both in his teaching and by his example. Christ calls us to shun any
Vergeltungsgedenken as it relates to our relationship with our fellow men. And so any historical accommodation to men's weakness in the Mosaic Law is by Christ foreclosed. He does for the Golden Rule something similar that he died to marriage.
In Christ's view, as related in the Gospel of Matthew, the Golden Rule is equivalent to the Law and the Prophets:
haec est enim lex et prophetae. Christ did not come to abolish the Law and the Prophets, but to fulfill them. Matt. 5:17. Since Christ is the fulfillment of the Law and the Prophets, and the Golden Rule is an equivalent to those, it follows that Christ is the fulfillment of the Golden Rule. That is, Christ's life is a revelation, the ultimate standard, of how one is to live one's life so as to do to others what we would have them do to us. The two great commandments of love of God and the love of our neighbor are equally a summation of the Law and the Prophets. Matt. 22:40. Therefore, the Golden Rule requires us to love God and to love our neighbor as ourselves. This would mean that the Golden Rule cannot be interpreted in a manner that would violate the love of neighbor or the love of God.
In discussing the Golden Rule, St. Augustine states that when Christ enjoins us to do unto others what we would like them do do to us, there is an implied understanding that it is in reference to good, which explains the differences between the Latin text before him which limits the rule expressly to the good, and the Greek text that does not mention it.
For the thought occurred, that if any one should wish something wicked to be done to him, and should refer this clause to that—as, for instance, if one should wish to be challenged to drink immoderately, and to get drunk over his cups, and should first do this to the party by whom he wishes it to be done to himself—it would be ridiculous to imagine that he had fulfilled this clause. . . .For the expression used, "whatsoever ye would," ought to be understood as used not in a customary and random, but in a strict sense. For there is no will except in the good.
Occurrebat enim quod, si quisquam flagitiose aliquid erga se fieri velit et ad hoc referat istam sententiam, veluti se velit aliquis provocari ut immoderate bibat et se ingurgitet poculis et hoc prior illi faciat a quo sibi fieri cupit, ridiculum est hunc putare istam implevisse sententiam. . . . Id enim quod dictum est: Quaecumque vultis, non usitate ac passim sed proprie dictum accipi oportet. Voluntas namque non est nisi in bonis.
II.22.74. We might end our reflections on Christ's teaching on the Golden Rule in Matthew and Luke by quoting Wattle's summary of it in his book
The Golden Rule:
In sum, though the golden rule was not part of the written Torah, it may be said to be fulfilled in Jesus' life and teachings. The traditional golden rule is preserved, adjusted from a negative to a positive formulation, deepened in context, and associated with the overturning of the principle of retaliation.
Wattles, 57.