Whether the infusion of grace is required for the remission of guilt, i.e. for the justification of the ungodly?

Objections

Objection 1 : It would seem that for the remission of guilt, which is the justification of the ungodly, no infusion of grace is required. For anyone may be moved from one contrary without being led to the other, if the contraries are not immediate. Now the state of guilt and the state of grace are not immediate contraries; for there is the middle state of innocence wherein a man has neither grace nor guilt. Hence a man may be pardoned his guilt without his being brought to a state of grace.
Objection 2 : Further, the remission of guilt consists in the Divine imputation, according to Ps. 31:2: "Blessed is the man to whom the Lord hath not imputed sin." Now the infusion of grace puts something into our soul, as stated above (Question [110], Article [1]). Hence the infusion of grace is not required for the remission of guilt.
Objection 3 : Further, no one can be subject to two contraries at once. Now some sins are contraries, as wastefulness and miserliness. Hence whoever is subject to the sin of wastefulness is not simultaneously subject to the sin of miserliness, yet it may happen that he has been subject to it hitherto. Hence by sinning with the vice of wastefulness he is freed from the sin of miserliness. And thus a sin is remitted without grace.