Ephesians 5:11

And have no fellowship with the unfruitful works of darkness. The point of this exhortation is in the adjective "unfruitful." The works of darkness are unfruitful; they produce no goodness, give rise to no satisfaction, to no moral results that are "a joy forever;" or, if fruit they have, it is shame, remorse, despair. Contrast this with the renovating, satisfying, joy-producing, fruits of righteousness. But rather even reprove them. Do not be content with a passive attitude towards them, but take the aggressive and expose their wickedness, whether in public or in the domestic circle. A testimony has to be lifted up against ways that are so shameful and that bring down the wrath of God.