Ephesians 5:3-4, 11

But sexual immorality and all [moral] impurity [indecent, offensive behavior] or greed must not even be hinted at among you, as is proper among saints [for as believers our way of life, whether in public or in private, reflects the validity of our faith]. Let there be no filthiness and silly talk, or coarse [obscene or vulgar] joking, because such things are not appropriate [for believers]; but instead speak of your thankfulness [to God].

Do not participate in the worthless and unproductive deeds of darkness, but instead expose them [by exemplifying personal integrity, moral courage, and godly character]