Isaías 1

Isaías 1:20

He who forgives sins is proclaimed to be just and merciful; we know with the greatest of ease that the forgiveness of sins is granted only to the converted, and the punishment of eternal damnation is inflicted only on those who remain in sin.…In Isaiah is found a similar declaration from the divine Word against the recalcitrant who scorn the divine clemency. In this declaration it is made known that one obeys the divine commands not without reason and that one does not remain in evil without punishment.… Who, I ask, is so hard and altogether inert that, in these words of the highest admonition, if he is not called to conversion out of the pleasure of what is promised, he is not at least compelled by the fear of punishment? Salvation will not accept the one who scorns the divine words, but the sword will devour him. — ON THE FORGIVENESS OF SINS 1:11.2-3