Assuming that this applies to genuine believers, you will note in Scripture that those who sin after being saved are chastised severely (1 Cor 5:1-5), and there is also a "sin unto death" (1 Cor 11:26-34). Premature death. But that person remains saved, since salvation is by grace through faith in Christ and His finished work of redemption. Just as Abraham believed God and it was accounted (or imputed) to him for righteousness, God justifies the sinner when he believes. And eternal life is a gift of God, not something which is deserved or earned.
[h=3]Sexual Immorality Defiles the Church[/h]5 It is actually reported that there is sexual immorality among you, and of a kind that is not tolerated even among pagans, for a man has his father's wife. 2 And you are arrogant! Ought you not rather to mourn? Let him who has done this be removed from among you.
3 For though absent in body, I am present in spirit; and as if present, I have already pronounced judgment on the one who did such a thing.4 When you are assembled in the name of the Lord Jesus and my spirit is present, with the power of our Lord Jesus, 5 you are to deliver this man to Satan for the destruction of the flesh, so that his spirit may be saved in the day of the Lord.[a]
I believe Paul tell the corinthian to remove the person WHO does sexual immorality from the church,
Hoping he repent and save
I do not believe Paul say No matter what you do, after you accept Jesus you save
Paul Said ought you not rather to mourn?
this question mean paul want punish this person in order to make him mourn. Repent and save.
if this person not repent and keep doing sexual immoralty, I do not believe he save.
rev 21
But the cowardly, the unbelieving, the vile, the murderers, the sexually immoral, those who practice magic arts, the idolaters and all liars--their place will be in the fiery lake of burning sulfur. This is the second death."