5 You are to deliver this man over to Satan for physical discipline [to destroy carnal lusts which prompted him to incest], that [his] spirit may [yet] be saved in the day of the Lord Jesus.
6 [About the condition of your church] your boasting is not good [indeed, it is most unseemly and entirely out of place]. Do you not know that [just] a little leaven will ferment the whole lump [of dough]?
7 Purge (clean out) the old leaven that you may be fresh (new) dough, still uncontaminated [as you are], for Christ, our Passover [Lamb], has been sacrificed.
8 Therefore, let us keep the feast, not with old leaven, nor with leaven of vice and malice and wickedness, but with the unleavened [bread] of purity (nobility, honor) and sincerity and [unadulterated] truth. [Exod. 12:19; 13:7; Deut. 16:3.]
9 I wrote you in my [previous] letter not to associate [closely and habitually] with unchaste (impure) people–
10 Not [meaning of course that you must] altogether shun the immoral people of this world, or the greedy graspers and cheats and thieves or idolaters, since otherwise you would need to get out of the world and human society altogether!
11 But now I write to you not to associate with anyone who bears the name of [Christian] brother if he is known to be guilty of immorality or greed, or is an idolater [whose soul is devoted to any object that usurps the place of God], or is a person with a foul tongue [railing, abusing, reviling, slandering], or is a drunkard or a swindler or a robber. [No] you must not so much as eat with such a person.