Of course you could because any who are redeemed have a new nature within them, which is what makes it to heaven. it's not the old nature purified. It's a new one that is righteous by faith.
The old one has been crucified with Christ and it is dead spiritually, so when we die physically, it's gone for good.
The reason that we still have problems with sin is because we still have habits and thought patterns which we still carry around in these physical corrupted bodies of ours.
Belief in “Purgatory” goes right along with the belief in faith and works for salvation. What seems to be lost on the adherents to it is the idea that if we could “pay the penalty” for our sins by suffering, then Christ did not have to die for us. The title of “99 & 1/2 Won’t Do” is exactly true, except what is left out is that Christ’s righteousness imputed to us by grace through faith is 100% GRACE and nothing we add, or can add, counts.
No. Christ said we have to pay the last penny.
If you believe, you are redeemed and will eventually be with Him in Heaven... after you have been allowed to complete your purification from sin.