There is good and there is evil, right and wrong, truth and lie, light and darkness, etc.   “Woe to those who call evil good and good evil, who put darkness for light and light for darkness, who put bitter for sweet and sweet for bitter” (Isaiah 5:20 NIV).  Satan wants to blur the lines; it is his favorite tactic.  One of the reasons the Spirit is given to us is to enable us to see what is really before our eyes; He will help us to discern the heart of issues.  He will lead us into righteous ways.  His discerning is not given so we can condemn the world, but so that we can live a godly life and invite the world by our example to do the same.