3 Bible Verses about Warnings Of Evil Associations

I wrote to you, in my letter, not to keep company with fornicators;

Become not unequally yoked with unbelievers; for what fellowship have righteousness and lawlessness? And what communion has light with darkness?

but, as it is, I wrote not to keep company, if anyone, called a brother, be a fornicator, or covetous, or an idolator, or a reviler, or a drunkard, or an extortioner??ith such a one, not even to eat.