1 Corinthians 5:13

I wrote unto you in an epistle not to company with fornicators:

Yet not altogether with the fornicators of this world, or with the covetous, or extortioners, or with idolaters; for then must ye needs go out of the world.

But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner; with such an one no not to eat.

For what have I to do to judge them also that are without? do not ye judge them that are within?