This is my view. In the 1 Corinthian quote, when the Lord is referring to fornicators, idolaters, adulterers, effeminate, abusers of themselves with mankind, thieves, covetous, drunkards, revilers, extortioners, I think he is using those labels to describe unsaved people only. Saved people sin also, but they are not referred to in the above terms, because the righteousness of the Lord sanctifies them. Because Paul then says "And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus, and by the Spirit of our God."
That says to me that once you are saved, you can still sin (and you will), but you are being sanctified by the blood of Christ, and the labels no longer define who you are. Christ's redeeming blood now defines you as "a sinner saved by grace". So, for example, you still may lie, but the label "lier" does not define who you are (in Christ). You may still be caught in adultery, but the label "adultress" does not define who you are (in Christ).
So, following my logic, if you are smack dab in the middle of sinning when you pass on to eternity, the sin you are in the middle of is not your true identity. Christ and his sanctification have made you into a new creation. You were engaging in sin, but as a saved Christian you were redeemed by the blood of the Lamb. Sin does not permanently define who you are. Your new identity is in Christ.
Someone, correct me if I am wrong here.
Jesus saith unto him, "I am the Way, the Truth and the Life; no man cometh unto the Father but by me." John 14:6