9 I wrote to you in my letter not to associate with sexually immoral people— 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? 13 God judges those outside.Note what he says in verse ten: we should not have any dealings with sexually immoral people - who are INSIDE the church. Paul is not saying we are to distance ourselves from sexually immoral lost people. They need us more than ever.
Instead, he asks in verse twelve a very relevant question: "What business is it of mine to judge the lost?" Rhetorical question. He answers it in verse 13: It's not my business; God judges those people.
Now, because of this boycott, we've lost great opportunities to present the gospel of peace with these people because we have been at war with them for eight years. The very people we are to reach have been made "our enemy." Jesus said the world would hate us and they do - but for the wrong reasons.
Again, the Apostle said it well in 2 Corinthians 10;
3 For though we walk in the flesh, we are not waging war according to the flesh. 4 For the weapons of our warfare are not of the flesh but have divine power to destroy strongholds.