Whether the debt of punishment that arises through ingratitude in respect of a subsequent sin is as great as that of the sins previously pardoned?

Objections

Objection 1 : It would seem that the debt of punishment arising through ingratitude in respect of a subsequent sin is as great as that of the sins previously pardoned. Because the greatness of the favor of the pardon of sins is according to the greatness of the sin pardoned, and so too, in consequence, is the greatness of the ingratitude whereby this favor is scorned. But the greatness of the consequent debt of punishment is in accord with the greatness of the ingratitude. Therefore the debt of punishment arising through ingratitude in respect of a subsequent sin is as great as the debt of punishment due for all the previous sins.
Objection 2 : Further, it is a greater sin to offend God than to offend man. But a slave who is freed by his master returns to the same state of slavery from which he was freed, or even to a worse state. Much more therefore he that sins against God after being freed from sin, returns to the debt of as great a punishment as he had incurred before.
Objection 3 : Further, it is written (Mt. 18:34) that "his lord being angry, delivered him" (whose sins returned to him on account of his ingratitude) "to the torturers, until he paid all the debt." But this would not be so unless the debt of punishment incurred through ingratitude were as great as that incurred through all previous sins. Therefore an equal debt of punishment returns through ingratitude.