A stubborn heart shall fare evil at the last; and he that loves danger shall perish therein.
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Fulgentius of Ruspe
He receives the never-ending share of the heavenly inheritance who, guarding the unity of brotherly love within the catholic church, before finishing the present life gives up the lethal hardness of the impenitent heart and does not despair that within the one and truly catholic church the remission of all sins will be given by the Holy Spirit to those who have converted. Our Savior demonstrates as much. Indeed, after the resurrection, breathing on his disciples and giving them the gift of the Holy Spirit, he gave them the power to forgive sins, saying, "Receive the Holy Spirit. If you forgive the sins of anyone, they shall be forgiven; if you retain them, they will be retained." Therefore, they do not close the door of mercy"an action that would create a desperation that leads to death"on those who, separated from the catholic church, are tied to the error of whatever heresy or schism. Those heretics or schismatics will give up their hard-heartedness if they do not want to be punished with evils that will have no end. It is indeed written that "the stubborn mind will be afflicted at the end, and whoever loves danger will perish by it." What is there that is more dangerous than not offering obedience to the divine Word and disdaining the will of God who calls? Therefore, in the book of holy Job, just as eternal glory is promised to those who convert, the impious are denied the gifts of salvation because they do not obey. If indeed it is written, "Those who return from iniquity, if they listen and obey, will fill their days with blessings and their years with honor. But he does not preserve the ungodly because they are not willing to know the Lord and because when reproved they were disobedient," they therefore ought not to disdain the time dedicated to obedience but ought to return to the catholic church in which alone, through the gift of the Holy Spirit, "love covers a multitude of sins." - "On the Forgiveness of Sins 1.25.2–26.1"