HKB
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 (I, 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.
EIGHTH ARTICLE [I-II, Q. 113, Art. 8]
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.
Obj. 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.
Obj. 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).