 It is easy to see then that the proponent of a moral argument has a complex task: She must defend the reality and objectivity of the feature of morality appealed to, but also defend the claim that this feature can be best explained by God. The second part of the task may require not only demonstrating the strengths of a theistic explanation, but pointing out weaknesses in rival secular explanations as well. Both parts of the task are essential, but it is worth noting that the two components cannot be accomplished simultaneously. The theist must defend the reality of morality against subjectivists, constructivists, and “moral nihilists.” Assuming that this task has been carried out, the theist must then try to show that morality thus understood requires or at least is most plausibly understood by  a theistic explanation.