Yet not altogether with the fornicators of this world, or with the covetous, or extortionists, or with idolaters; for then must you needs go out of the world.
Be you not unequally yoked together with unbelievers: for what fellowship has righteousness with unrighteousness? and what communion has light with darkness?
Now we command you, brothers, in the name of our Lord Jesus Christ, that you withdraw yourselves from every brother that walks disorderly, and not after the tradition which he received of us.