'Perverted' in the Bible

so that you may prove yourselves to be blameless and guileless, innocent and uncontaminated, children of God without blemish in the midst of a [morally] crooked and [spiritually] perverted generation, among whom you are seen as bright lights [beacons shining out clearly] in the world [of darkness],

well aware that such a person is twisted and is sinning; he is convicted and self-condemned [and is gratified by causing confusion among believers].