Have no fellowship with the unfruitful works of darkness, but rather even reprove them.
These vile lusts were rife among pagans and must be cut out by the roots. Do not name them as though they were acceptable; hate them utterly as befit the saints. Guard even against foolish talking and jesting that cheapen what is holy.
AI summary
Commenting on Ephesians 5:3-20
unfruitful works of darkness--Sins are terminated in themselves, and therefore are called "works," not "fruits" (Gal 5:19, Gal 5:22). Their only fruit is that which is not in a true sense fruit (Deu 32:32), namely, "death" (Rom 6:21; Gal 6:8). Plants cannot bear "fruit" in the absence of light. Sin is "darkness," and its parent is the prince of darkness (Eph 6:12).
And have no fellowship with the unfruitful works of darkness, but rather reprove [them]. (e) Make them open to all the world, by your good life.