 Even limited just to the contemporary Christian tradition, “sin” denotes a broad category which can be subcategorized in a number of ways. One could, for instance, classify sins in terms of offenses against different individuals or groups, as when one distinguishes between sins against God, sins against others, and sins against oneself (see Sweeney 2018: 351; for other subcategorizations of sin in these terms, see Couenhoven 2013 and McCall 2019: chapter 5). One could also differentiate between the moral wrong that has been done by an act of sin (sometimes called “the problem of past sin”), and the moral wrong or sin that one is likely to do (sometimes called “the problem of future sin”; see Stump 1988: 64). Future sins can be further divided between moral wrongs that one is likely to do in virtue of one’s personal inclinations or dispositions, and moral wrongs that one is likely to do in virtue of possessing a fallen or sinful human nature. The present article will explore sin as an action  (section 2),  sin as a disposition or vice  (section 3)  and sin as a state or “the condition of being in sin”  (section 4;  see Plantinga 2000: 207).