Yep. That's like one of the key religious/spiritual beliefs. Humans are incapable of good judgment due to lack of omniscience. Nobody can make a proper moral judgment of any individual since you don't have perfect knowledge of all their past and future deeds and circumstances. Even Christianity subscribes to this idea "vengeance is mine". Ballancing of universal scales is best left to a mystical omnipresent entity that has access to every bit of information in existence.