Ephesians 5:4-5
5:4 Neither should there be vulgar speech, foolish talk, or coarse jesting – all of which are out of character – but rather thanksgiving.
5:5 For you can be confident of this one thing: 1 that no person who is immoral, impure, or greedy (such a person is an idolater) has any inheritance in the kingdom of Christ and God.
1 tn Grk “be knowing this.” See also 2 Pet 1:20 for a similar phrase: τοῦτο πρῶτον γινώσκοντες (touto prwton ginwskonte").