I have decided to deliver such a one to Satan for the destruction of his flesh, that his spirit may be saved in the day of the Lord Jesus. (5:5)To put the professed believer out of their fellowship, to excommunicate him, would be to deliver such a one to Satan for the destruction of his flesh. Satan is the ruler of this world, and turning a believer over to Satan,
therefore, thrusts the believer back into the world on his own, apart from the care and support of Christian fellowship. That person has forfeited his right to participation in the church of Jesus Christ, which He intends to keep pure at all costs.
The word deliver (paradidomi) is a strong term indicating the judicial act of sentencing, of handing over for punishment.The sentence passed on a sinning believer is to be given to Satan. Paul excommunicated Hymenaeus and Alexander because of their continued and unrepented blasphemy. They were pastors with a false gospel; he “delivered [them] over to Satan that they may be taught not to blaspheme” (1 Tim. 1:20).
The result of such discipline is the destruction of the flesh. Destruction (olethros) may refer even to death. It is used frequently in connection with divine judgment on sin. But Satan has no power over the spirits of believers.
When Satan attacked Job, he was only allowed to harm that man of God physically. He could destroy his possessions and afflict his body, but he could not destroy his soul. The inner believer belongs entirely to Christ and we have the absolute assurance that he will be saved in the day of the Lord Jesus. But in the meanwhile the unrepentant believer may be turned over to suffer greatly at the hands’ of Satan.