Can you please back up all your assertions in the above post with scripture? That sounds like the idea of purgatory. Which is not biblical.
Also...are you a member of the church of LDS like Cougarbear? (Mormon)
These verses tell us that Christ went among the dead after his death but before being resurrected. He went and preached to the spirits in prison (spirit prison). He preached unto those who are dead or in other words to the spirit of those who have died. Since Christ was the first to resurrect to immortality in this life, all those who lived from the time of Adam, even those of the days of Noah, were without a resurrected body up until they are to be resurrected. They are spirits. Christ went among them and taught his gospel. Nowhere does it say that the place where the spirits reside after death is hell. Peter called it "the spirits in prison". We LDS call it spirit prison. Because Jesus told the thief on the cross that he would be with him on that very day in paradise, we call the place where the spirits of the dead who have accepted Christ and await a glorious resurrection as paradise (read my previous posts regarding this).
1 Peter 3:18-20
18 For Christ also hath once suffered for sins, the just for the unjust, that he might bring us to God, being put to death in the flesh, but quickened by the Spirit:
19 By which also he went and preached unto the spirits in prison;
20 Which sometime were disobedient, when once the longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is, eight souls were saved by water.
1 Peter 4:6
6 For for this cause was the gospel preached also to them that are dead, that they might be judged according to men in the flesh, but live according to God in the spirit.
Doctrine and Covenants 138
We are required to be baptized in order to enter the kingdom of heaven.
John 3:5
5 Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God.
For this reason it has always been a doctrine of the true church of Jesus Christ that there be baptism for the dead. Paul even used the doctrine of baptism for the dead to bolster his argument for the resurrection to the Corinthians:
1 Corinthians 15:29
29 Else what shall they do which are baptized for the dead, if the dead rise not at all? why are they then baptized for the dead?
Because of the requirement to be baptized, Jesus instituted baptism for the dead so that mankind would all have the opportunity to enter the kingdom of God. This way those who die in this life who never had the opportunity of hearing or receiving the fulness of the gospel can receive it in the next life before the resurrection and judgment of God. I can't help but think that this may be the reason that the resurrection of the unjust is put off until the end of the millennium. This would give more the opportunity of a thousand years to still accept his gospel and baptism.