To do its worst, evil needs to look its best. Evil had to send a lot on makeup...Vices have to masquerade as virtues - lust as love, thinly veiled sadism as military discipline, envy as righteous indignation, domestic tyranny as parental concern...From counterfeit money to phony airliner parts to the trustworthy look on the face of a con artist, evil appears in disguise. Hence the need for the Holy Spirit's gift of discernment. Hence the sheer difficulty, at times, of distinguishing what is good from what is evil
Cornelius Plantinga Jr.~~"Not the Way It's Supposed to Be: A Breviary of Sin"