Follow the narrative
In following the biblical narrative about sin to its origin I’ve landed on the questions of “what happened” and “why did the copies or examples of the things in the heavens need to be purified” being that my idea of heaven meant something to the affect of incorruptible. It’s from within the book of Hebrews (9) that incites further investigation into these questions by prayer for discovering to learn what Jesus Christ reveals as the Holy Spirit gives utterance.
It is in the book of Ezekiel (28) where we find the anointed cherub, and also, again, presented the Daystar (Lucifer), son of the dawn in the book of Isaiah (14), cast down and fallen from the place of heaven.
Read the Scriptures and test what I write to see whether it’s reasonable and worthy of acceptance. Because unless I’m missing the mark about what I’ve heard in church “there being no existence of evil after Christians are resurrected into glory” and “once saved always saved”, then this might come as shock to those who hold either of those two positions.
The case before me
Whenever I follow the biblical narrative about that anointed cherub and Daystar, I realize an everlasting existence of evil to be the necessary counter balance of the everlasting existence of good, or else free will doesn’t work. I think in order for the free will of emotional and logical conscious creatures to function with autonomous intelligence in the realm of God, the everlasting existence of good and evil must have reality. If not, I don’t see how any creature can exist beyond being robotic in nature. With everlasting reality comes eternal consequences, does it not?