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.

[5:5]  ¹ tn Grk “be knowing this.” See also 2 Pet 1:20 for a similar phrase: τοῦτο πρῶτον γινώσκοντες (touto prwton ginwskonte").