Chapter 199 — On the reparation of human nature through Christ

Nevertheless, human nature, infected in the aforesaid way, ought to be repaired by divine providence. It could not be admitted to perfect beatitude unless it were freed of its defilement. Beatitude, being a perfect good, tolerates no defect, especially the defect of sin; for sin is, in its own way, opposed to virtue, which is the path leading to beatitude, as was said. And so, since man was made for beatitude, for it is his ultimate end, one might conclude that God’s work in creating so noble a being was doomed to frustration. But this the Psalmist holds to be inadmissible, for he says in Psalm 89 [88]:48: For what vanity thou hast created all the sons of men? Accordingly, it was fitting that human nature should be restored.

Furthermore, divine goodness exceeds the creature’s capacity for good. As long as man leads a mortal life in this world, we know that his condition is such that he is neither immovably confirmed in good nor immovably obstinate in evil. Hence the very condition of human nature implies that it is capable of being cleansed from the contamination of sin. Surely the divine goodness would hardly allow this capacity to remain forever unrealized; but this would have been so had God not provided a remedy devised for man’s restoration.