this question depends upon the definition of the word, Nature, than which there is none more ambiguous and equivocal. - David Hume

The sense of justice and injustice is not deriv'd from nature, but arises artificially... from education, and human conventions.

Ignorance is the mother of Devotion: A maxim that is proverbial, and confirmed by general experience. Look out for a people, entirely destitute of religion: If you find them at all, be assured, that they are but few degrees removed from brutes. What so pure as some of the morals, included in some theological system? What so corrupt as some of the practices, to which these systems give rise?

Is he willing to prevent evil, but not able? then is he impotent. Is he able, but not willing? then is he malevolent. Is he both able and willing? whence then is evil?