Whether virtuous deeds done in charity can be deadened?

❌ Objection 1 : It would seem that virtuous deeds done in charity cannot be deadened. For that which is not cannot be changed. But to be deadened is to be changed from life to death. Since therefore virtuous deeds, after being done, are no more, it seems that they cannot afterwards be deadened.

❌ Objection 2 : Further, by virtuous deeds done in charity, man merits eternal life. But to take away the reward from one who has merited it is an injustice, which cannot be ascribed to God. Therefore it is not possible for virtuous deeds done in charity to be deadened by a subsequent sin.

❌ Objection 3 : Further, the strong is not corrupted by the weak. Now works of charity are stronger than any sins, because, as it is written (Prov. 10:12), "charity covereth all sins." Therefore it seems that deeds done in charity cannot be deadened by a subsequent mortal sin.