9 I wrote to you in an epistle not to keep company with fornicators.
9
I wrote to you in my letter not to associate with sexually immoral people—
10 I mean not with the fornicators of this world or with the covetous or the extortioners or the servers of idols: otherwise you must needs go out of this world.
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.