3 Bible Verses about Warnings Of Evil Associations

I wrote to you in an epistle, Not to converse with lewd persons.

Be not unequally yoked with unbelievers; for what fellowship hath righteousness with unrighteousness? or what communion hath light with darkness?

But I have now written unto you, if any who is named a brother, be a lewd person, or covetous, or an idolater, or a railer, or a drunkard, or rapacious, not to converse with such an one, no, not to eat with him.