Now that faith, goodwill, and free choice have been treated, the related topic of repentance comes next, because without repentance there can be no true faith and no genuine goodwill, and no one could repent without free choice. Another reason why there is a treatment of repentance at this point is that the topic that follows is regeneration, and none of us can be regenerated before the more serious evils that make us detestable before God have been removed; repentance is what removes them.
What else are unregenerate people by impenitent? And what else are impenitent people but those who are in a drowsy state of apathy? They know nothing about sin and therefore cherish it deep within themselves and make love to it every day the way an adulterous man makes love to a promiscuous woman who shares his bed.
To make known what repentance is and what effect it has, this treatment of it will be divided into separate headings.
from Regeneration, Page 23