The theistic philosopher has a tendency to devalue insufficient worldviews, ideologies, and quite often common sense for the greater good, and in such cases, one should not be discouraged when seen as a bad guy. If he stresses over man's perception of a righteous heart, then he has given his heart to man.
Man is not defiled by his impurities. It is the other man pointing out his impurities to him, whom he is defiled by. Is there anything anyone can do, to become righteous, anyway? God made us impure. If he had a problem with that, He would have made us gods, instead.
If I were to believe in God enough to call him a murderer, then I might also believe enough that he, as a spirit, exists beyond death; and therefore only he could do it righteously. For the physical being kills a man and hatefully sends him away, whereas God, the spiritual being, kills a man and lovingly draws him nigh.
Just as some people may conceal their own sinfulness thus seeming better than the norm, others expose their own sinfulness thus seeming worse than the norm.