Summa Th. II-II EN Qu.169 a.2

Whether the adornment of women is devoid of mortal sin?

Objection: 1. It would seem that the adornment of women is not devoid of mortal sin. For whatever is contrary to a precept of the Divine law is a mortal sin. Now the adornment of women is contrary to a precept of the Divine law; for it is written (1P 3,3): "Whose," namely women's, "adorning, let it not be the outward plaiting of the hair, or the wearing of gold, or the putting on of apparel." Wherefore a gloss of Cyprian says: "Those who are clothed in silk and purple cannot sincerely put on Christ: those who are bedecked with gold and pearls and trinkets have forfeited the adornments of mind and body." Now this is not done without a mortal sin. Therefore the adornment of women cannot be devoid of mortal sin.
2. Further, Cyprian says (De Habit. Virg.): "I hold that not only virgins and widows, but also wives and all women without exception, should be admonished that nowise should they deface God's work and fabric, the clay that He has fashioned, with the aid of yellow pigments, black powders or rouge, or by applying any dye that alters the natural features." And afterwards he adds: "They lay hands on God, when they strive to reform what He has formed. This is an assault on the Divine handiwork, a distortion of the truth. Thou shalt not be able to see God, having no longer the eyes that God made, but those the devil has unmade; with him shalt thou burn on whose account thou art bedecked." But this is not due except to mortal sin. Therefore the adornment of women is not devoid of mortal sin.
3. Further, just as it is unbecoming for a woman to wear man's clothes, so is it unbecoming for her to adorn herself inordinately. Now the former is a sin, for it is written (Dt 22,5): "A woman shall not be clothed with man's apparel, neither shall a man use woman's apparel." Therefore it seems that also the excessive adornment of women is a mortal sin.

On the contrary On the contrary, If this were true it would seem that the makers of these means of adornment sin mortally.
I answer that As regards the adornment of women, we must bear in mind the general statements made above (Article [1]) concerning outward apparel, and also something special, namely that a woman's apparel may incite men to lust, according to Pr 7,10, "Behold a woman meeteth him in harlot's attire, prepared to deceive souls."Nevertheless a woman may use means to please her husband, lest through despising her he fall into adultery. Hence it is written (1Co 7,34) that the woman "that is married thinketh on the things of the world, how she may please her husband." Wherefore if a married woman adorn herself in order to please her husband she can do this without sin.But those women who have no husband nor wish to have one, or who are in a state of life inconsistent with marriage, cannot without sin desire to give lustful pleasure to those men who see them, because this is to incite them to sin. And if indeed they adorn themselves with this intention of provoking others to lust, they sin mortally; whereas if they do so from frivolity, or from vanity for the sake of ostentation, it is not always mortal, but sometimes venial. And the same applies to men in this respect. Hence Augustine says (Ep. ccxlv ad Possid.): "I do not wish you to be hasty in forbidding the wearing of gold or costly attire except in the case of those who being neither married nor wishful to marry, should think how they may please God: whereas the others think on the things of the world, either husbands how they may please their wives, or wives how they may please their husbands, except that it is unbecoming for women though married to uncover their hair, since the Apostle commands them to cover the head." Yet in this case some might be excused from sin, when they do this not through vanity but on account of some contrary custom: although such a custom is not to be commended.

Reply to Objection: 1. As a gloss says on this passage, "The wives of those who were in distress despised their husbands, and decked themselves that they might please other men": and the Apostle forbids this. Cyprian is speaking in the same sense; yet he does not forbid married women to adorn themselves in order to please their husbands, lest the latter be afforded an occasion of sin with other women. Hence the Apostle says (1Tm 2,9): "Women . . . in ornate [Douay: 'decent'] apparel, adorning themselves with modesty and sobriety, not with plaited hair, or gold, or pearls, or costly attire": whence we are given to understand that women are not forbidden to adorn themselves soberly and moderately but to do so excessively, shamelessly, and immodestly.
2. Cyprian is speaking of women painting themselves: this is a kind of falsification, which cannot be devoid of sin. Wherefore Augustine says (Ep. ccxlv ad Possid.): "To dye oneself with paints in order to have a rosier or a paler complexion is a lying counterfeit. I doubt whether even their husbands are willing to be deceived by it, by whom alone" (i.e. the husbands) "are they to be permitted, but not ordered, to adorn themselves." However, such painting does not always involve a mortal sin, but only when it is done for the sake of sensuous pleasure or in contempt of God, and it is to like cases that Cyprian refers.It must, however, be observed that it is one thing to counterfeit a beauty one has not, and another to hide a disfigurement arising from some cause such as sickness or the like. For this is lawful, since according to the Apostle (1Co 12,23), "such as we think to be the less honorable members of the body, about these we put more abundant honor."
3. As stated in the foregoing Article, outward apparel should be consistent with the estate of the person, according to the general custom. Hence it is in itself sinful for a woman to wear man's clothes, or vice versa; especially since this may be a cause of sensuous pleasure; and it is expressly forbidden in the Law (Dt 22) because the Gentiles used to practice this change of attire for the purpose of idolatrous superstition. Nevertheless this may be done sometimes without sin on account of some necessity, either in order to hide oneself from enemies, or through lack of other clothes, or for some similar motive.
4. In the case of an art directed to the production of goods which men cannot use without sin, it follows that the workmen sin in making such things, as directly affording others an occasion of sin; for instance, if a man were to make idols or anything pertaining to idolatrous worship. But in the case of an art the products of which may be employed by man either for a good or for an evil use, such as swords, arrows, and the like, the practice of such an art is not sinful. These alone should be called arts; wherefore Chrysostom says [*Hom. xlix super Matth.]: "The name of art should be applied to those only which contribute towards and produce necessaries and mainstays of life." In the case of an art that produces things which for the most part some people put to an evil use, although such arts are not unlawful in themselves, nevertheless, according to the teaching of Plato, they should be extirpated from the State by the governing authority. Accordingly, since women may lawfully adorn themselves, whether to maintain the fitness of their estate, or even by adding something thereto, in order to please their husbands, it follows that those who make such means of adornment do not sin in the practice of their art, except perhaps by inventing means that are superfluous and fantastic. Hence Chrysostom says (Super Matth.) that "even the shoemakers' and clothiers' arts stand in need of restraint, for they have lent their art to lust, by abusing its needs, and debasing art by art."


We must next consider the precepts of temperance:

(1) The precepts of temperance itself;

(2) The precepts of its parts.

Whether the precepts of temperance are suitably given in the Divine law?

Objection: 1. It would seem that the precepts of temperance are unsuitably given in the Divine law. Because fortitude is a greater virtue than temperance, as stated above (Question [123], Article [12]; Question [141], Article [8]; FS, Question [66], Article [4]). Now there is no precept of fortitude among the precepts of the decalogue, which are the most important among the precepts of the Law. Therefore it was unfitting to include among the precepts of the decalogue the prohibition of adultery, which is contrary to temperance, as stated above (Question [154], Articles [1],8).
2. Further, temperance is not only about venereal matters, but also about pleasures of meat and drink. Now the precepts of the decalogue include no prohibition of a vice pertaining to pleasures of meat and drink, or to any other species of lust. Neither, therefore, should they include a precept prohibiting adultery, which pertains to venereal pleasure.
3. Further, in the lawgiver's intention inducement to virtue precedes the prohibition of vice, since vices are forbidden in order that obstacles to virtue may be removed. Now the precepts of the decalogue are the most important in the Divine law. Therefore the precepts of the decalogue should have included an affirmative precept directly prescribing the virtue of temperance, rather than a negative precept forbidding adultery which is directly opposed thereto.

On the contrary stands the authority of Scripture in the decalogue (Ex 20,14 Ex 20,17).
I answer that As the Apostle says (1Tm 1,5), "the end of the commandment is charity," which is enjoined upon us in the two precepts concerning the love of God and of our neighbor. Wherefore the decalogue contains those precepts which tend more directly to the love of God and of our neighbor. Now among the vices opposed to temperance, adultery would seem most of all opposed to the love of our neighbor, since thereby a man lays hold of another's property for his own use, by abusing his neighbor's wife. Wherefore the precepts of the decalogue include a special prohibition of adultery, not only as committed in deed, but also as desired in thought.

Reply to Objection: 1. Among the species of vices opposed to fortitude there is not one that is so directly opposed to the love of our neighbor as adultery, which is a species of lust that is opposed to temperance. And yet the vice of daring, which is opposed to fortitude, is wont to be sometimes the cause of murder, which is forbidden by one of the precepts of the decalogue: for it is written (Si 8,18): "Go not on the way with a bold man lest he burden thee with his evils."
2. Gluttony is not directly opposed to the love of our neighbor, as adultery is. Nor indeed is any other species of lust, for a father is not so wronged by the seduction of the virgin over whom he has no connubial right, as is the husband by the adultery of his wife, for he, not the wife herself, has power over her body [*1Co 7,4].
3. As stated above (Question [122], Articles [1],4) the precepts of the decalogue are universal principles of the Divine law; hence they need to be common precepts. Now it was not possible to give any common affirmative precepts of temperance, because the practice of temperance varies according to different times, as Augustine remarks (De Bono Conjug. xv, 7), and according to different human laws and customs.

Whether the precepts of the virtues annexed to temperance are suitably given in the Divine law?

Objection: 1. It would seem that the precepts of the virtues annexed to temperance are unsuitably given in the Divine law. For the precepts of the Decalogue, as stated above (Article [1], ad 3), are certain universal principles of the whole Divine law. Now "pride is the beginning of all sin," according to Si 10,15. Therefore among the precepts of the Decalogue there should have been one forbidding pride.
2. Further, a place before all should have been given in the decalogue to those precepts by which men are especially induced to fulfil the Law, because these would seem to be the most important. Now since humility subjects man to God, it would seem most of all to dispose man to the fulfilment of the Divine law; wherefore obedience is accounted one of the degrees of humility, as stated above (Question [161], Article [6]); and the same apparently applies to meekness, the effect of which is that a man does not contradict the Divine Scriptures, as Augustine observes (De Doctr. Christ. ii, 7). Therefore it seems that the Decalogue should have contained precepts of humility and meekness.
3. Further, it was stated in the foregoing Article that adultery is forbidden in the decalogue, because it is contrary to the love of our neighbor. But inordinateness of outward movements, which is contrary to modesty, is opposed to neighborly love: wherefore Augustine says in his Rule (Ep. ccxii): "In all your movements let nothing be done to offend the eye of any person whatever." Therefore it seems that this kind of inordinateness should also have been forbidden by a precept of the Decalogue.

On the contrary suffices the authority of Scripture.
I answer that The virtues annexed to temperance may be considered in two ways: first, in themselves; secondly, in their effects. Considered in themselves they have no direct connection with the love of God or of our neighbor; rather do they regard a certain moderation of things pertaining to man himself. But considered in their effects, they may regard the love of God or of our neighbor: and in this respect the decalogue contains precepts that relate to the prohibition of the effects of the vices opposed to the parts of temperance. Thus the effect of anger, which is opposed to meekness, is sometimes that a man goes on to commit murder (and this is forbidden in the Decalogue), and sometimes that he refuses due honor to his parents, which may also be the result of pride, which leads many to transgress the precepts of the first table.

Reply to Objection: 1. Pride is the beginning of sin, but it lies hidden in the heart; and its inordinateness is not perceived by all in common. Hence there was no place for its prohibition among the precepts of the Decalogue, which are like first self-evident principles.
2. Those precepts which are essentially an inducement to the observance of the Law presuppose the Law to be already given, wherefore they cannot be first precepts of the Law so as to have a place in the Decalogue.
3. Inordinate outward movement is not injurious to one's neighbor, if we consider the species of the act, as are murder, adultery, and theft, which are forbidden in the decalogue; but only as being signs of an inward inordinateness, as stated above (Question [168], Article [1], ad 1,3).


PERTAINING TO KNOWLEDGE (Questions [171]-175)


After treating individually of all the virtues and vices that pertain to men of all conditions and estates, we must now consider those things which pertain especially to certain men. Now there is a triple difference between men as regards things connected with the soul's habits and acts. First, in reference to the various gratuitous graces, according to 1Co 12,4 1Co 12,7: "There are diversities of graces . . . and to one . . . by the Spirit is given the word of wisdom, to another the word of knowledge," etc. Another difference arises from the diversities of life, namely the active and the contemplative life, which correspond to diverse purposes of operation, wherefore it is stated (1Co 12,4 1Co 12,7) that "there are diversities of operations." For the purpose of operation in Martha, who "was busy about much serving," which pertains to the active life, differed from the purpose of operation in Mary, "who sitting . . . at the Lord's feet, heard His word" (Lc 10,39-40), which pertains to the contemplative life. A third difference corresponds to the various duties and states of life, as expressed in Ep 4,11, "And He gave some apostles; and some prophets; and other some evangelists; and other some pastors and doctors": and this pertains to diversity of ministries, of which it is written (1Co 12,5): "There are diversities of ministries."

With regard to gratuitous graces, which are the first object to be considered, it must be observed that some of them pertain to knowledge, some to speech, and some to operation. Now all things pertaining to knowledge may be comprised under "prophecy," since prophetic revelation extends not only to future events relating to man, but also to things relating to God, both as to those which are to be believed by all and are matters of "faith," and as to yet higher mysteries, which concern the perfect and belong to "wisdom." Again, prophetic revelation is about things pertaining to spiritual substances, by whom we are urged to good or evil; this pertains to the "discernment of spirits." Moreover it extends to the direction of human acts, and this pertains to "knowledge," as we shall explain further on (Question [177]). Accordingly we must first of all consider prophecy, and rapture which is a degree of prophecy.

Prophecy admits of four heads of consideration: (1) its essence; (2) its cause; (3) the mode of prophetic knowledge; (4) the division of prophecy.

Under the first head there are six points of inquiry:

(1) Whether prophecy pertains to knowledge?

(2) Whether it is a habit?

(3) Whether it is only about future contingencies?

(4) Whether a prophet knows all possible matters of prophecy?

(5) Whether a prophet distinguishes that which he perceives by the gift of God, from that which he perceives by his own spirit?

(6) Whether anything false can be the matter of prophecy?

Whether prophecy pertains to knowledge?

Objection: 1. It would seem that prophecy does not pertain to knowledge. For it is written (Si 48,14) that after death the body of Eliseus prophesied, and further on (Si 49,18) it is said of Joseph that "his bones were visited, and after death they prophesied." Now no knowledge remains in the body or in the bones after death. Therefore prophecy does not pertain to knowledge.
2. Further, it is written (1Co 14,3): "He that prophesieth, speaketh to men unto edification." Now speech is not knowledge itself, but its effect. Therefore it would seem that prophecy does not pertain to knowledge.
3. Further, every cognitive perfection excludes folly and madness. Yet both of these are consistent with prophecy; for it is written (Os 9,7): "Know ye, O Israel, that the prophet was foolish and mad [*Vulg.: 'the spiritual man was mad']." Therefore prophecy is not a cognitive perfection.
4. Further, just as revelation regards the intellect, so inspiration regards, apparently, the affections, since it denotes a kind of motion. Now prophecy is described as "inspiration" or "revelation," according to Cassiodorus [*Prolog. super Psalt. i]. Therefore it would seem that prophecy does not pertain to the intellect more than to the affections.

On the contrary It is written (1S 9,9): "For he that is now called a prophet, in time past was called a seer." Now sight pertains to knowledge. Therefore prophecy pertains to knowledge.
I answer that Prophecy first and chiefly consists in knowledge, because, to wit, prophets know things that are far [procul] removed from man's knowledge. Wherefore they may be said to take their name from (phanos), "apparition," because things appear to them from afar. Wherefore, as Isidore states (Etym. vii, 8), "in the Old Testament, they were called Seers, because they saw what others saw not, and surveyed things hidden in mystery." Hence among heathen nations they were known as "vates, on account of their power of mind [vi mentis]," [*The Latin 'vates' is from the Greek (phates), and may be rendered 'soothsayer'] (Etym. viii, 7).Since, however, it is written (1Co 12,7): "The manifestation of the Spirit is given to every man unto profit," and further on (1Co 14,12): "Seek to abound unto the edification of the Church," it follows that prophecy consists secondarily in speech, in so far as the prophets declare for the instruction of others, the things they know through being taught of God, according to the saying of Is 21,10, "That which I have heard of the Lord of hosts, the God of Israel, I have declared unto you." Accordingly, as Isidore says (Etym. viii, 7), "prophets" may be described as "proefatores [foretellers], because they tell from afar [porro fantur]," that is, speak from a distance, "and foretell the truth about things to come."Now those things above human ken which are revealed by God cannot be confirmed by human reason, which they surpass as regards the operation of the Divine power, according to Mc 16,20, "They . . . preached everywhere, the Lord working withal and confirming the word with signs that followed." Hence, thirdly, prophecy is concerned with the working of miracles, as a kind of confirmation of the prophetic utterances. Wherefore it is written (Dt 34,10-11): "There arose no more a prophet in Israel like unto Moses, whom the Lord knew face to face, in all the signs and wonders."

Reply to Objection: 1. These passages speak of prophecy in reference to the third point just mentioned, which regards the proof of prophecy.
2. The Apostle is speaking there of the prophetic utterances.
3. Those prophets who are described as foolish and mad are not true but false prophets, of whom it is said (Jr 3,16): "Hearken not to the words of the prophets that prophesy to you, and deceive you; they speak a vision of their own heart, and not out of the mouth of the Lord," and (Ez 13,3): "Woe to the foolish prophets, that follow their own spirit, and see nothing."
4. It is requisite to prophecy that the intention of the mind be raised to the perception of Divine things: wherefore it is written (Ez 2,1): "Son of man, stand upon thy feet, and I will speak to thee." This raising of the intention is brought about by the motion of the Holy Ghost, wherefore the text goes on to say: "And the Spirit entered into me . . . and He set me upon my feet." After the mind's intention has been raised to heavenly things, it perceives the things of God; hence the text continues: "And I heard Him speaking to me." Accordingly inspiration is requisite for prophecy, as regards the raising of the mind, according to Jb 32,8, "The inspiration of the Almighty giveth understanding": while revelation is necessary, as regards the very perception of Divine things, whereby prophecy is completed; by its means the veil of darkness and ignorance is removed, according to Jb 12,22, "He discovereth great things out of darkness."

Whether prophecy is a habit?

Objection: 1. It would seem that prophecy is a habit. For according to Ethic. ii, 5, "there are three things in the soul, power, passion, and habit." Now prophecy is not a power, for then it would be in all men, since the powers of the soul are common to them. Again it is not a passion, since the passions belong to the appetitive faculty, as stated above (FS, Question [22], Article [2]); whereas prophecy pertains principally to knowledge, as stated in the foregoing Article. Therefore prophecy is a habit.
2. Further, every perfection of the soul, which is not always in act, is a habit. Now prophecy is a perfection of the soul; and it is not always in act, else a prophet could not be described as asleep. Therefore seemingly prophecy is a habit.
3. Further, prophecy is reckoned among the gratuitous graces. Now grace is something in the soul, after the manner of a habit, as stated above (FS, Question [110], Article [2]). Therefore prophecy is a habit.

On the contrary A habit is something "whereby we act when we will," as the Commentator [*Averroes or Ibn Roshd, 1120-1198] says (De Anima iii). But a man cannot make use of prophecy when he will, as appears in the case of Eliseus (2R 3,15), "who on Josaphat inquiring of him concerning the future, and the spirit of prophecy failing him, caused a minstrel to be brought to him, that the spirit of prophecy might come down upon him through the praise of psalmody, and fill his mind with things to come," as Gregory observes (Hom. i super Ezech.). Therefore prophecy is not a habit.
I answer that As the Apostle says (Ep 5,13), "all that is made manifest is light," because, to wit, just as the manifestation of the material sight takes place through material light, so too the manifestation of intellectual sight takes place through intellectual light. Accordingly manifestation must be proportionate to the light by means of which it takes place, even as an effect is proportionate to its cause. Since then prophecy pertains to a knowledge that surpasses natural reason, as stated above (Article [1]), it follows that prophecy requires an intellectual light surpassing the light of natural reason. Hence the saying of Mi 7,8: "When I sit in darkness, the Lord is my light." Now light may be in a subject in two ways: first, by way of an abiding form, as material light is in the sun, and in fire; secondly, by way of a passion, or passing impression, as light is in the air. Now the prophetic light is not in the prophet's intellect by way of an abiding form, else a prophet would always be able to prophesy, which is clearly false. For Gregory says (Hom. i super Ezech.): "Sometimes the spirit of prophecy is lacking to the prophet, nor is it always within the call of his mind, yet so that in its absence he knows that its presence is due to a gift." Hence Eliseus said of the Sunamite woman (2R 4,27): "Her soul is in anguish, and the Lord hath hid it from me, and hath not told me." The reason for this is that the intellectual light that is in a subject by way of an abiding and complete form, perfects the intellect chiefly to the effect of knowing the principle of the things manifested by that light; thus by the light of the active intellect the intellect knows chiefly the first principles of all things known naturally. Now the principle of things pertaining to supernatural knowledge, which are manifested by prophecy, is God Himself, Whom the prophets do not see in His essence, although He is seen by the blessed in heaven, in whom this light is by way of an abiding and complete form, according to Ps 35,10, "In Thy light we shall see light."It follows therefore that the prophetic light is in the prophet's soul by way of a passion or transitory impression. This is indicated Ex 33,22: "When my glory shall pass, I will set thee in a hole of the rock," etc., and 1R 19,11: "Go forth and stand upon the mount before the Lord; and behold the Lord passeth," etc. Hence it is that even as the air is ever in need of a fresh enlightening, so too the prophet's mind is always in need of a fresh revelation; thus a disciple who has not yet acquired the principles of an art needs to have every detail explained to him. Wherefore it is written (Is 1,4): "In the morning He wakeneth my ear, so that I may hear Him as a master." This is also indicated by the very manner in which prophecies are uttered: thus it is stated that "the Lord spake to such and such a prophet," or that "the word of the Lord," or "the hand of the Lord was made upon him."But a habit is an abiding form. Wherefore it is evident that, properly speaking, prophecy is not a habit.

Reply to Objection: 1. This division of the Philosopher's does not comprise absolutely all that is in the soul, but only such as can be principles of moral actions, which are done sometimes from passion, sometimes from habit, sometimes from mere power, as in the case of those who perform an action from the judgment of their reason before having the habit of that action.However, prophecy may be reduced to a passion, provided we understand passion to denote any kind of receiving, in which sense the Philosopher says (De Anima iii, 4) that "to understand is, in a way, to be passive." For just as, in natural knowledge, the possible intellect is passive to the light of the active intellect, so too in prophetic knowledge the human intellect is passive to the enlightening of the Divine light.
2. Just as in corporeal things, when a passion ceases, there remains a certain aptitude to a repetition of the passion---thus wood once ignited is more easily ignited again, so too in the prophet's intellect, after the actual enlightenment has ceased, there remains an aptitude to be enlightened anew---thus when the mind has once been aroused to devotion, it is more easily recalled to its former devotion. Hence Augustine says (De orando Deum. Ep. cxxx, 9) that our prayers need to be frequent, "lest devotion be extinguished as soon as it is kindled."We might, however, reply that a person is called a prophet, even while his prophetic enlightenment ceases to be actual, on account of his being deputed by God, according to Jr 1,5, "And I made thee a prophet unto the nations."
3. Every gift of grace raises man to something above human nature, and this may happen in two ways. First, as to the substance of the act---for instance, the working of miracles, and the knowledge of the uncertain and hidden things of Divine wisdom---and for such acts man is not granted a habitual gift of grace. Secondly, a thing is above human nature as to the mode but not the substance of the act---for instance to love God and to know Him in the mirror of His creatures---and for this a habitual gift of grace is bestowed.

Whether prophecy is only about future contingencies?

Objection: 1. It would seem that prophecy is only about future contingencies. For Cassiodorus says [*Prol. super Psalt. i] that "prophecy is a Divine inspiration or revelation, announcing the issue of things with unchangeable truth." Now issues pertain to future contingencies. Therefore the prophetic revelation is about future contingencies alone.
2. Further, according to 1Co 12 the grace of prophecy is differentiated from wisdom and faith, which are about Divine things; and from the discernment of spirits, which is about created spirits; and from knowledge, which is about human things. Now habits and acts are differentiated by their objects, as stated above (FS, Question [54], Article [2]). Therefore it seems that the object of prophecy is not connected with any of the above. Therefore it follows that it is about future contingencies alone.
3. Further, difference of object causes difference of species, as stated above (FS, Question [54], Article [2]). Therefore, if one prophecy is about future contingencies, and another about other things, it would seem to follow that these are different species of prophecy.

On the contrary Gregory says (Hom. i super Ezech.) that some prophecies are "about the future, for instance (Is 7,14), 'Behold a virgin shall conceive, and bear a son'"; some are "about the past, as (Gn 1,1), 'In the beginning God created heaven and earth'"; some are "about the present," as (1Co 14,24-25), "If all prophesy, and there come in one that believeth not . . . the secrets of his heart are made manifest." Therefore prophecy is not about future contingencies alone.
I answer that A manifestation made by means of a certain light can extend to all those things that are subject to that light: thus the body's sight extends to all colors, and the soul's natural knowledge extends to whatever is subject to the light of the active intellect. Now prophetic knowledge comes through a Divine light, whereby it is possible to know all things both Divine and human, both spiritual and corporeal; and consequently the prophetic revelation extends to them all. Thus by the ministry of spirits a prophetic revelation concerning the perfections of God and the angels was made to Is 6,1, where it is written, "I saw the Lord sitting upon a throne high and elevated." Moreover his prophecy contains matters referring to natural bodies, according to the words of Is 40,12, "Who hath measured the waters in the hollow of His hand," etc. It also contains matters relating to human conduct, according to Is 58,1, "Deal thy bread to the hungry," etc.; and besides this it contains things pertaining to future events, according to Is 47,9, "Two things shall come upon thee suddenly in one day, barrenness and widowhood."Since, however, prophecy is about things remote from our knowledge, it must be observed that the more remote things are from our knowledge the more pertinent they are to prophecy. Of such things there are three degrees. One degree comprises things remote from the knowledge, either sensitive or intellective, of some particular man, but not from the knowledge of all men; thus a particular man knows by sense things present to him locally, which another man does not know by human sense, since they are removed from him. Thus Eliseus knew prophetically what his disciple Giezi had done in his absence (2R 5,26), and in like manner the secret thoughts of one man are manifested prophetically to another, according to 1Co 14,25; and again in this way what one man knows by demonstration may be revealed to another prophetically.The second degree comprises those things which surpass the knowledge of all men without exception, not that they are in themselves unknowable, but on account of a defect in human knowledge; such as the mystery of the Trinity, which was revealed by the Seraphim saying: "Holy, Holy, Holy," etc. (Is 6,3).The last degree comprises things remote from the knowledge of all men, through being in themselves unknowable; such are future contingencies, the truth of which is indeterminate. And since that which is predicated universally and by its very nature, takes precedence of that which is predicated in a limited and relative sense, it follows that revelation of future events belongs most properly to prophecy, and from this prophecy apparently takes its name. Hence Gregory says (Hom. i super Ezech.): "And since a prophet is so called because he foretells the future, his name loses its significance when he speaks of the past or present."

Reply to Objection: 1. Prophecy is there defined according to its proper signification; and it is in this sense that it is differentiated from the other gratuitous graces.
2. This is evident from what has just been said. We might also reply that all those things that are the matter of prophecy have the common aspect of being unknowable to man except by Divine revelation; whereas those that are the matter of "wisdom," "knowledge," and the "interpretation of speeches," can be known by man through natural reason, but are manifested in a higher way through the enlightening of the Divine light. As to "faith," although it is about things invisible to man, it is not concerned with the knowledge of the things believed, but with a man's certitude of assent to things known by others.
3. The formal element in prophetic knowledge is the Divine light, which being one, gives unity of species to prophecy, although the things prophetically manifested by the Divine light are diverse.

Summa Th. II-II EN Qu.169 a.2