1 Corinthians 5:11

But now I write to you not to associate with anyone who bears the name of [Christian] brother if he is known to be guilty of immorality or greed, or is an idolater [whose soul is devoted to any object that usurps the place of God], or is a person with a foul tongue [railing, abusing, reviling, slandering], or is a drunkard or a swindler or a robber. [No] you must not so much as eat with such a person.