Sin is fruitful just because, like a virus, it attaches the life force and dynamics of its host. 139 Sowing and reaping, human longing, children’s natural trust of their parents —such things belong among the springs and roots of a good creation. Sin does not remove these things; it attaches them and converts them to new uses. A faithful father, for instance, accepts his small daughter’s trust and love, strengthens them, and tries to extend them toward God and out toward the world. A sexually abusive father also accepts his daughter’s trust and love, but he uses them to bind his daughter to his lust. Sooner or later, he converts trust to fear and love to resentment. He strengthens these emotions with each episode of abuse, and, whether he wants to or not, may extend them toward God and out toward the world. The parasitic nature of sin accounts for the fruitfulness