V.1-5 Paul brings a serious charge against them. That they were allowing a man to be in the assembly who was living with his father’s second wife. They were so pleased with all the ability they had, that they were not judging this evil. They were responsible for what was going on and it was no secret.
V.2 But first they had to humble themselves. If there was no humbling then they would never put the man away. If they did humble themselves then they would act quickly.
V.5 This may puzzle some. It appears as if it might mean that this person would go to hell, but this could never happen to a believer. Always note the exact words of Scripture when you do not understand. It says “For the destruction of the flesh,” not “the soul or the spirit.” These can never be destroyed. (Read 1 Cor. 11:29-30). Though Paul was an apostle, and therefore had power to do this, he didn’t. But he tells them to do it and to put away this man from the assembly. The former can’t be done today because there are no apostles, but the assembly can do the second thing as verses 7 and 13 say plainly.