1 Corinthians 5:1-5

Similar to 1 Timothy 1:20, there is a handing over to Satan here in 1 Corinthians 5. This person who has his father's wife is to be removed from among them. Those at the Corinthian church were proud though they should have been mourning. Now the purpose of casting the man out is for the purpose of saving him. Somehow in some way the "handing him over to Satan" is for the end goal of his salvation. This means that if he is not handed over to Satan, then he will not be saved. One thing that may occur as a result of this is the destruction of the flesh. This could possibly mean sinful nature, but it probably points to something physical. Regardless, the church needs to act in situations such as these and not simply be proud and let it be. Clearly this is unrepentant, otherwise he would have not continued in this. He "has" his father's wife; it doesn't say "had". This is continual and it has gone on long enough for Paul to hear about it and respond to it in a letter.