Is Paul asking for the man's soul and spirit to be destroyed, or just his flesh?
Paul is asking only for the destruction of the flesh, not for the man’s soul and spirit to be destroyed, since he is a believer. The delivery to Satan is for his physical life, so that his spirit may be saved in the day of the Lord Jesus.
Les explains that the flesh, soul, and spirit are not the same, so Paul is not demanding the destruction of this man’s soul and spirit as a believer. Instead, the assembled church, with Paul’s spirit and the power of the Lord Jesus Christ, is to deliver such a one to Satan for the destruction of the flesh. Les teaches that this means Satan could destroy his physical life or flesh, but only as God permits, just as Satan could go only as far as God allowed with Job. The purpose is not spiritual annihilation, because the spirit may be saved in the day of the Lord Jesus.