‘Soul’ is a pretty tough thing to define, so many people have so many different opinions on what it is. But since the rule of the board is to test things with Scripture, it makes it a little easier for us.
We are urged to live good lives, like is the will and nature of the Father, so that we may be raised up and spend our life after death in His city, the new Jerusalem for His tribe.
If we don’t, we are purged by fire for an eternity, not fire that consumes, because the people there are said to gnash their teeth and moan. You can’t do that if you are consumed.
We are transformed one way or another, either through our love or through His fire. Our soul will have to lose it’s bad inclination before it is ready to enter into the new world. If you have a wooden table that falls apart, but cut a small board out of it that’s still reliable and make another table with new wood and the little piece that’s still fine, can you still say the old table lives?