Romans 8:7

"Because the carnal mind is enmity against God:" and this is worse than death. Then to show how it is at once death and enmity; "for it is not subject to the Law of God," he says, "neither indeed can be." But be not troubled at hearing the "neither indeed can be." For this difficulty admits of an easy solution. For what he here names "carnal mindedness" is the reasoning that is earthly, gross, and eager-hearted after the things of this life and its wicked doings. It is of this he says "neither yet can" it "be subject" to God. And what hope of salvation is there left, if it be impossible for one who is bad to become good? This is not what he says. Else how would Paul have become such as he was? how would the (penitent) thief, or Manasses, or the Ninevites, or how would David after falling have recovered himself? How would Peter after the denial have raised himself up? How could he that had lived in fornication have been enlisted among Christ's fold? How could the Galatians who had "fallen from grace" have attained their former dignity again? What he says then is not that it is impossible for a man that is wicked to become good, but that it is impossible for one who continues wicked to be subject to God. Yet for a man to be changed, and so become good, and subject to Him, is easy. For he does not say that man cannot be subject to God, but, wicked doing cannot be good. As if he had said, fornication cannot be chastity, nor vice virtue. And this it says in the Gospel also, "A corrupt tree cannot bring forth good fruit," not to bar the change from virtue to vice, but to say how incapable continuance in vice is of bringing forth good fruits. For He does not say that an evil tree cannot become a good one, but that bring forth good fruit it cannot, while it continues evil. For that it can be changed, He shows from this passage, and from another parable, when He introduces the tares as becoming wheat, on which score also He forbids their being rooted up; "Lest," He says, "ye root up also the wheat with them"; that is, that which will spring from them.