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).

Reply Obj. 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