Objection 5: Further, if grace is infused into the soul, there must be an instant when it first dwells in the soul; so, too, if sin is forgiven there must be a last instant that man is in sin. But it cannot be the same instant, otherwise opposites would be in the same simultaneously. Hence they must be two successive instants; between which there must be time, as the Philosopher says (Phys. vi, 1). Therefore the justification of the ungodly takes place not all at once, but successively.
On the contrary, The justification of the ungodly is caused by the justifying grace of the Holy Spirit. Now the Holy Spirit comes to men's minds suddenly, according to Acts 2:2 : "And suddenly there came a sound from heaven as of a mighty wind coming," upon which the gloss says that "the grace of the Holy Ghost knows no tardy efforts." Hence the justification of the ungodly is not successive, but instantaneous.
I answer that, The entire justification of the ungodly consists as to its origin in the infusion of grace. For it is by grace that free-will is moved and sin is remitted. Now the infusion of grace takes place in an instant and without succession. And the reason of this is that if a form be not suddenly impressed upon its subject, it is either because that subject is not disposed, or because the agent needs time to dispose the subject. Hence we see that immediately the matter is disposed by a preceding alteration, the substantial form accrues to the matter; thus because the atmosphere of itself is disposed to receive light, it is suddenly illuminated by a body actually luminous. Now it was stated (Q[112], A[2]) that God, in order to infuse grace into the soul, needs no disposition, save what He Himself has made. And sometimes this sufficient disposition for the reception of grace He makes suddenly, sometimes gradually and successively, as stated above (Q[112], A[2], ad 2). For the reason why a natural agent cannot suddenly dispose matter is that in the matter there is a resistant which has some disproportion with the power of the agent; and hence we see that the stronger the agent, the more speedily is the matter disposed. Therefore, since the Divine power is infinite, it can suddenly dispose any matter whatsoever to its form; and much more man's free-will, whose movement is by nature instantaneous. Therefore the justification of the ungodly by God takes place in an instant.
Reply to Objection 1: The movement of the free-will, which concurs in the justification of the ungodly, is a consent to detest sin, and to draw near to God; and this consent takes place suddenly. Sometimes, indeed, it happens that deliberation precedes, yet this is not of the substance of justification, but a way of justification; as local movement is a way of illumination, and alteration to generation.
Reply to Objection 2: As stated above (FP, Q[85], A[5]), there is nothing to prevent two things being understood at once, in so far as they are somehow one; thus we understand the subject and predicate together, inasmuch as they are united in the order of one affirmation. And in the same manner can the free-will be moved to two things at once in so far as one is ordained to the other. Now the free-will's movement towards sin is ordained to the free-will's movement towards God, since a man detests sin, as contrary to God, to Whom he wishes to cling. Hence in the justification of the ungodly the free-will simultaneously detests sin and turns to God, even as a body approaches one point and withdraws from another simultaneously.
Reply to Objection 3: The reason why a form is not received instantaneously in the matter is not the fact that it can inhere more or less; for thus the light would not be suddenly received in the air, which can be illumined more or less. But the reason is to be sought on the part of the disposition of the matter or subject, as stated above.
Reply to Objection 4: The same instant the form is acquired, the thing begins to operate with the form; as fire, the instant it is generated moves upwards, and if its movement was instantaneous, it would be terminated in the same instant. Now to will and not to will---the movements of the free-will---are not successive, but instantaneous. Hence the justification of the ungodly must not be successive.
Reply to Objection 5: The succession of opposites in the same subject must be looked at differently in the things that are subject to time and in those that are above time. For in those that are in time, there is no last instant in which the previous form inheres in the subject; but there is the last time, and the first instant that the subsequent form inheres in the matter or subject; and this for the reason, that in time we are not to consider one instant, since neither do instants succeed each other immediately in time, nor points in a line, as is proved in Physic. vi, 1. But time is terminated by an instant. Hence in the whole of the previous time wherein anything is moving towards its form, it is under the opposite form; but in the last instant of this time, which is the first instant of the subsequent time, it has the form which is the term of the movement.
But in those that are above time, it is otherwise. For if there be any succession of affections or intellectual conceptions in them (as in the angels), such succession is not measured by continuous time, but by discrete time, even as the things measured are not continuous, as stated above (FP, Q[53], AA[2],3). In these, therefore, there is a last instant in which the preceding is, and a first instant in which the subsequent is. Nor must there be time in between, since there is no continuity of time, which this would necessitate.
Now the human mind, which is justified, is, in itself, above time, but is subject to time accidentally, inasmuch as it understands with continuity and time, with respect to the phantasms in which it considers the intelligible species, as stated above (FP, Q[85], AA[1],2). We must, therefore, decide from this about its change as regards the condition of temporal movements, i.e. we must say that there is no last instant that sin inheres, but a last time; whereas there is a first instant that grace inheres; and in all the time previous sin inhered.
Whether the infusion of grace is naturally the first of the things required for the justification of the ungodly?
Objection 1: It would seem that the infusion of grace is not what is naturally required first for the justification of the ungodly. For we withdraw from evil before drawing near to good, according to Ps. 33:15 : "Turn away from evil, and do good." Now the remission of sins regards the turning away from evil, and the infusion of grace regards the turning to good. Hence the remission of sin is naturally before the infusion of grace.
Objection 2: Further, the disposition naturally precedes the form to which it disposes. Now the free-will's movement is a disposition for the reception of grace. Therefore it naturally precedes the infusion of grace.
Objection 3: Further, sin hinders the soul from tending freely to God. Now a hindrance to movement must be removed before the movement takes place. Hence the remission of sin and the free-will's movement towards sin are naturally before the infusion of grace.
On the contrary, The cause is naturally prior to its effect. Now the infusion of grace is the cause of whatever is required for the justification of the ungodly, as stated above (A[7]). Therefore it is naturally prior to it.
I answer that, The aforesaid four things required for the justification of the ungodly are simultaneous in time, since the justification of the ungodly is not successive, as stated above (A[7]); but in the order of nature, one is prior to another; and in their natural order the first is the infusion of grace; the second, the free-will's movement towards God; the third, the free-will's movement towards sin; the fourth, the remission of sin.
The reason for this is that in every movement the motion of the mover is naturally first; the disposition of the matter, or the movement of the moved, is second; the end or term of the movement in which the motion of the mover rests, is last. Now the motion of God the Mover is the infusion of grace, as stated above (A[6]); the movement or disposition of the moved is the free-will's double movement; and the term or end of the movement is the remission of sin, as stated above (A[6]). Hence in their natural order the first in the justification of the ungodly is the infusion of grace; the second is the free-will's movement towards God; the third is the free-will's movement towards sin, for he who is being justified detests sin because it is against God, and thus the free-will's movement towards God naturally precedes the free-will's movement towards sin, since it is its cause and reason; the fourth and last is the remission of sin, to which this transmutation is ordained as to an end, as stated above (AA[1],6).
Reply to Objection 1: The withdrawal from one term and approach to another may be looked at in two ways: first, on the part of the thing moved, and thus the withdrawal from a term naturally precedes the approach to a term, since in the subject of movement the opposite which is put away is prior to the opposite which the subject moved attains to by its movement. But on the part of the agent it is the other way about, since the agent, by the form pre-existing in it, acts for the removal of the opposite form; as the sun by its light acts for the removal of darkness, and hence on the part of the sun, illumination is prior to the removal of darkness; but on the part of the atmosphere to be illuminated, to be freed from darkness is, in the order of nature, prior to being illuminated, although both are simultaneous in time. And since the infusion of grace and the remission of sin regard God Who justifies, hence in the order of nature the infusion of grace is prior to the freeing from sin. But if we look at what is on the part of the man justified, it is the other way about, since in the order of nature the being freed from sin is prior to the obtaining of justifying grace. Or it may be said that the term "whence" of justification is sin; and the term "whereto" is justice; and that grace is the cause of the forgiveness of sin and of obtaining of justice.
Reply to Objection 2: The disposition of the subject precedes the reception of the form, in the order of nature; yet it follows the action of the agent, whereby the subject is disposed. And hence the free-will's movement precedes the reception of grace in the order of nature, and follows the infusion of grace.
Reply to Objection 3: As the Philosopher says (Phys. ii, 9), in movements of the soul the movement toward the speculative principle or the practical end is the very first, but in exterior movements the removal of the impediment precedes the attainment of the end. And as the free-will's movement is a movement of the soul, in the order of nature it moves towards God as to its end, before removing the impediment of sin.
Whether the justification of the ungodly is God's greatest work?
Objection 1: It would seem that the justification of the ungodly is not God's greatest work. For it is by the justification of the ungodly that we attain the grace of a wayfarer. Now by glorification we receive heavenly grace, which is greater. Hence the glorification of angels and men is a greater work than the justification of the ungodly.
Objection 2: Further, the justification of the ungodly is ordained to the particular good of one man. But the good of the universe is greater than the good of one man, as is plain from Ethic. i, 2. Hence the creation of heaven and earth is a greater work than the justification of the ungodly.
Objection 3: Further, to make something from nothing, where there is nought to cooperate with the agent, is greater than to make something with the cooperation of the recipient. Now in the work of creation something is made from nothing, and hence nothing can cooperate with the agent; but in the justification of the ungodly God makes something from something, i.e. a just man from a sinner, and there is a cooperation on man's part, since there is a movement of the free-will, as stated above (A[3]). Hence the justification of the ungodly is not God's greatest work.
On the contrary, It is written ( Ps. 144:9 ): "His tender mercies are over all His works," and in a collect [*Tenth Sunday after Pentecost] we say: "O God, Who dost show forth Thine all-mightiness most by pardoning and having mercy," and Augustine, expounding the words, "greater than these shall he do" ( Jn. 14:12 ) says that "for a just man to be made from a sinner, is greater than to create heaven and earth."