“Personal sin” refers to individual sinful acts. Because the philosophical problems associated with personal sin initially seem very similar to the problems associated with moral wrongdoing, there has been comparatively little philosophical work on personal sin. Still, important definitional questions remain about exactly how, if at all, sin should be distinguished from moral wrongdoing, whether there are sinful actions that are not immoral actions, and, conversely, whether there are immoral actions that are not sinful (Mitchell 1984; Dalferth 1984; Adams 1991; Couenhoven 2009).