So you mean to say that one can commit adultery and then stop committing adultery some time before death and that would be OK? What time frame would we then be talking about?
Not sure exactly how you mean here. But I do believe that a saved person can fall into sin, however he or she will eventually repent and forsake this sin. As for those who continuously live in sin until they die, yes, such persons I do not think were ever saved. Even if they "played church".
Yes. Good scriptures.
(Died In Adultery) means there was no repentance, because to repent would be to divorce the unlawful woman and remain single or be reconciled to the living wife.
Example: John Hagee was married to Martha for like 20 years, he had an affair with the college girl (Diana Castro) in his college sunday school class, divorced Martha, wrote a big letter of this sin to the Baptist Church he was pastoring and resigned.
Hagee then went a few miles down the road and started the now Mega Church Corner Stone in San Antonio Texas, while remaining married to (Diana Castro) to this day, while Marth Hagee his lawful wife lives (Adultery)
If Hagee dies in this sinful condition, while remaining married to (Diana Castro) when Martha lives its Adultery, and the word is clear, adulterers won't be in the Kingdom
The father of modern dispensationalism C.I. Scofield also left his wife Leotine and two daughters and left Kansas to Dallas Texas, he divorced while having an affair with a college girl in Sunday school (Hettie Van Wart) in the church he pastored, he died while remaining married to Hettie, while Leotine lived (Adultery.
Scofield was the mentor of (Lewis S. Chafer) that started (Dallas Theological Seminary) dispensationalism's headquarters today.
Yes saved christians do sin, compared to Gods holiness, and we have instruction on this seen below.
1 John 2:1-2KJV
My little children, these things write I unto you, that ye sin not. And if any man sin, we have an advocate with the Father, Jesus Christ the righteous:
2 And he is the propitiation for our sins: and not for ours only, but also for the sins of the whole world.