3 Bible Verses about Warnings Of Evil Associations

I have written unto you in an epistle that you should not associate with fornicators.

Be not unequally yoked with infidels; for what participation hath righteousness with unrighteousness? and what fellowship [is there] between light and darkness?

But now I have written unto you not to associate with him, if any man, professing to be a brother, be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner, with such a one not even to eat.