10 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. 11 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. 12 For what have I to do to judge them also that are without? do not ye judge them that are within?
10 not at all meaning the people of this world who are immoral, or the greedy and swindlers, or idolaters. In that case you would have to leave this world. 11 But now I am writing to you that you must not associate with anyone who claims to be a brother or sister
10 not at all meaning the sexually immoral of this world, or the greedy and swindlers, or idolaters, since then you would need to go out of the world. 11 But now I am writing to you not to associate with anyone who bears the name of brother if he is guilty of sexual immorality or greed, or is an idolater, reviler, drunkard, or swindler--not even to eat with such a one. 12 For what have I to do with judging outsiders? Is it not those inside the church whom you are to judge?
10 I didn't mean that you should have nothing at all to do with outsiders of that sort. Or with crooks, whether blue- or white-collar. Or with spiritual phonies, for that matter. You'd have to leave the world entirely to do that! 11 But I am saying that you shouldn't act as if everything is just fine when one of your Christian companions is promiscuous or crooked, is flip with God or rude to friends, gets drunk or becomes greedy and predatory. You can't just go along with this, treating it as acceptable behavior. 12 I'm not responsible for what the outsiders do, but don't we have some responsibility for those within our community of believers?
10 Yet I certainly did not mean with the sexually immoral people of this world, or with the covetous, or extortioners, or idolaters, since then you would need to go out of the world. 11 But now I have written to you not to keep company with anyone named a brother, who is sexually immoral, or covetous, or an idolater, or a reviler, or a drunkard, or an extortioner--not even to eat with such a person. 12 For what have I to do with judging those also who are outside? Do you not judge those who are inside?
10 But I wasn't talking about unbelievers who indulge in sexual sin, or are greedy, or cheat people, or worship idols. You would have to leave this world to avoid people like that. 11 I meant that you are not to associate with anyone who claims to be a believer yet indulges in sexual sin, or is greedy, or worships idols, or is abusive, or is a drunkard, or cheats people. Don't even eat with such people. 12 It isn't my responsibility to judge outsiders, but it certainly is your responsibility to judge those inside the church who are sinning.
Matthew Henry's Commentary on 1 Corinthians 5:10-12
Commentary on 1 Corinthians 5:9-13
(Read 1 Corinthians 5:9-13)
Christians are to avoid familiar converse with all who disgrace the Christian name. Such are only fit companions for their brethren in sin, and to such company they should be left, whenever it is possible to do so. Alas, that there are many called Christians, whose conversation is more dangerous than that of heathens!