Fulgentius of Ruspe : 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 John Cassian : Moreover, we know that even holy people have been given over bodily to Satan or to great sufferings on account of some slight sins. For the divine clemency does not permit the least blemish or stain to be found in them on the day of judgment. According to the words of the prophet, which are in fact God's, he purges away all the dross of their uncleanness in the present so that he may bring them to eternity like fire-tried gold or silver, in need of no penal cleansing. — CONFERENCE 7:25.2 Justin Martyr : And that expression, "The sword shall devour you," does not mean that the disobedient shall be slain by the sword, but the sword of God is fire, of which they who choose to do wickedly become the fuel. Wherefore He says, "The sword shall devour you: for the mouth of the Lord hath spoken it." And if He had spoken concerning a sword that cuts and at once despatches, He would not have said, shall devour. — The First Apology, Chapter XLIV