But if grace is taken for the habitual gift, then again there is a double effect of grace, even as of every other form; the first of which is "being," and the second, "operation"; thus the work of heat is to make its subject hot, and to give heat outwardly. And thus habitual grace, inasmuch as it heals and justifies the soul, or makes it pleasing to God, is called operating grace; but inasmuch as it is the principle of meritorious works, which spring from the free-will, it is called cooperating grace.
Reply to Objection 1: Inasmuch as grace is a certain accidental quality, it does not act upon the soul efficiently, but formally, as whiteness makes a surface white.
Reply to Objection 2: God does not justify us without ourselves, because whilst we are being justified we consent to God's justification [justitiae] by a movement of our free-will. Nevertheless this movement is not the cause of grace, but the effect; hence the whole operation pertains to grace.
Reply to Objection 3: One thing is said to cooperate with another not merely when it is a secondary agent under a principal agent, but when it helps to the end intended. Now man is helped by God to will the good, through the means of operating grace. And hence, the end being already intended, grace cooperates with us.
Reply to Objection 4: Operating and cooperating grace are the same grace; but are distinguished by their different effects, as is plain from what has been said.
Whether grace is fittingly divided into prevenient and subsequent grace?
Objection 1: It would seem that grace is not fittingly divided into prevenient and subsequent. For grace is an effect of the Divine love. But God's love is never subsequent, but always prevenient, according to 1 Jn. 4:10 : "Not as though we had loved God, but because He hath first loved us." Therefore grace ought not to be divided into prevenient and subsequent.
Objection 2: Further, there is but one sanctifying grace in man, since it is sufficient, according to 2 Cor. 12:9 : "My grace is sufficient for thee." But the same thing cannot be before and after. Therefore grace is not fittingly divided into prevenient and subsequent.
Objection 3: Further, grace is known by its effects. Now there are an infinite number of effects---one preceding another. Hence it with regard to these, grace must be divided into prevenient and subsequent, it would seem that there are infinite species of grace. Now no art takes note of the infinite in number. Hence grace is not fittingly divided into prevenient and subsequent.
On the contrary, God's grace is the outcome of His mercy. Now both are said in Ps. 58:11 : "His mercy shall prevent me," and again, Ps. 22:6 : "Thy mercy will follow me." Therefore grace is fittingly divided into prevenient and subsequent.
I answer that, As grace is divided into operating and cooperating, with regard to its diverse effects, so also is it divided into prevenient and subsequent, howsoever we consider grace. Now there are five effects of grace in us: of these, the first is, to heal the soul; the second, to desire good; the third, to carry into effect the good proposed; the fourth, to persevere in good; the fifth, to reach glory. And hence grace, inasmuch as it causes the first effect in us, is called prevenient with respect to the second, and inasmuch as it causes the second, it is called subsequent with respect to the first effect. And as one effect is posterior to this effect, and prior to that, so may grace be called prevenient and subsequent on account of the same effect viewed relatively to divers others. And this is what Augustine says (De Natura et Gratia xxxi): "It is prevenient, inasmuch as it heals, and subsequent, inasmuch as, being healed, we are strengthened; it is prevenient, inasmuch as we are called, and subsequent, inasmuch as we are glorified."
Reply to Objection 1: God's love signifies something eternal; and hence can never be called anything but prevenient. But grace signifies a temporal effect, which can precede and follow another; and thus grace may be both prevenient and subsequent.
Reply to Objection 2: The division into prevenient and subsequent grace does not divide grace in its essence, but only in its effects, as was already said of operating and cooperating grace. For subsequent grace, inasmuch as it pertains to glory, is not numerically distinct from prevenient grace whereby we are at present justified. For even as the charity of the earth is not voided in heaven, so must the same be said of the light of grace, since the notion of neither implies imperfection.
Reply to Objection 3: Although the effects of grace may be infinite in number, even as human acts are infinite, nevertheless all reduced to some of a determinate species, and moreover all coincide in this---that one precedes another.
Whether gratuitous grace is rightly divided by the Apostle?
Objection 1: It would seem that gratuitous grace is not rightly divided by the Apostle. For every gift vouchsafed to us by God, may be called a gratuitous grace. Now there are an infinite number of gifts freely bestowed on us by God as regards both the good of the soul and the good of the body---and yet they do not make us pleasing to God. Hence gratuitous graces cannot be contained under any certain division.
Objection 2: Further, gratuitous grace is distinguished from sanctifying grace. But faith pertains to sanctifying grace, since we are justified by it, according to Rom. 5:1 : "Being justified therefore by faith." Hence it is not right to place faith amongst the gratuitous graces, especially since the other virtues are not so placed, as hope and charity.
Objection 3: Further, the operation of healing, and speaking divers tongues are miracles. Again, the interpretation of speeches pertains either to wisdom or to knowledge, according to Dan. 1:17 : "And to these children God gave knowledge and understanding in every book and wisdom." Hence it is not correct to divide the grace of healing and kinds of tongues against the working of miracles; and the interpretation of speeches against the word of wisdom and knowledge.
Objection 4: Further, as wisdom and knowledge are gifts of the Holy Ghost, so also are understanding, counsel, piety, fortitude, and fear, as stated above (Q[68], A[4]). Therefore these also ought to be placed amongst the gratuitous gifts.
On the contrary, The Apostle says ( 1 Cor. 12:8 , 9 , 10 ): "To one indeed by the Spirit is given the word of wisdom; and to another the word of knowledge, according to the same Spirit; to another, the working of miracles; to another, prophecy; to another, the discerning of spirits; to another divers kinds of tongues; to another interpretation of speeches."
I answer that, As was said above (A[1]), gratuitous grace is ordained to this, viz. that a man may help another to be led to God. Now no man can help in this by moving interiorly (for this belongs to God alone), but only exteriorly by teaching or persuading. Hence gratuitous grace embraces whatever a man needs in order to instruct another in Divine things which are above reason. Now for this three things are required: first, a man must possess the fullness of knowledge of Divine things, so as to be capable of teaching others. Secondly, he must be able to confirm or prove what he says, otherwise his words would have no weight. Thirdly, he must be capable of fittingly presenting to his hearers what he knows.
Now as regards the first, three things are necessary, as may be seen in human teaching. For whoever would teach another in any science must first be certain of the principles of the science, and with regard to this there is "faith," which is certitude of invisible things, the principles of Catholic doctrine. Secondly, it behooves the teacher to know the principal conclusions of the science, and hence we have the word of "wisdom," which is the knowledge of Divine things. Thirdly, he ought to abound with examples and a knowledge of effects, whereby at times he needs to manifest causes; and thus we have the word of "knowledge," which is the knowledge of human things, since "the invisible things of Him . . . are clearly seen, being understood by the things that are made" ( Rom. 1:20 ).
Now the confirmation of such things as are within reason rests upon arguments; but the confirmation of what is above reason rests on what is proper to the Divine power, and this in two ways: first, when the teacher of sacred doctrine does what God alone can do, in miraculous deeds, whether with respect to bodily health---and thus there is the "grace of healing," or merely for the purpose of manifesting the Divine power; for instance, that the sun should stand still or darken, or that the sea should be divided---and thus there is the "working of miracles." Secondly, when he can manifest what God alone can know, and these are either future contingents---and thus there is "prophecy," or also the secrets of hearts---and thus there is the "discerning of spirits."
But the capability of speaking can regard either the idiom in which a person can be understood, and thus there is "kinds of tongues"; or it can regard the sense of what is said, and thus there is the "interpretation of speeches."
Reply to Objection 1: As stated above (A[1]), not all the benefits divinely conferred upon us are called gratuitous graces, but only those that surpass the power of nature---e.g. that a fisherman should be replete with the word of wisdom and of knowledge and the like; and such as these are here set down as gratuitous graces.