I'm not sure....is that like the belief system (even though opposite...heaven, not hell) that some people go into a state of purgatory? Which would be someone under the state of grace that is transitioning for heaven....which I believe is a catholic belief.
If you do a word search in one of the online bible websites, you can search for the words....sleep, slept, asleep, sleepeth and such and you may see that is the term used for those that die.
In the story of Jesus raising Lazarus from the grave, scripture says:
John 11:11-14 These things said he: and after that he saith unto them, Our friend Lazarus sleepeth; but I go, that I may awake him out of sleep. Then said his disciples, Lord, if he sleep, he shall do well. Howbeit Jesus spake of his death: but they thought that he had spoken of taking of rest in sleep. Then said Jesus unto them plainly, Lazarus is dead.
John 11:25-26 Jesus said to her, I am the resurrection and the Life! He who believes in Me, though he die, yet he shall live. And whoever lives and believes in me shall never die. Do you believe this?
1 Thessalonians 4:13-14 But I would not have you to be ignorant, brethren, concerning them which are asleep, that ye sorrow not, even as others which have no hope.
For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with him.
So it sounds to me that scripture says that God will bring with Him all those that believe in Him but those that do not believe perhaps just stay asleep? For now at least?
In Revelation the scripture says "But the rest of the dead lived not again until the thousand years were finished"....I guess we have to ask the question....who are the rest of the dead? I would think it would have to be all that did not accept Jesus and/or people who never heard of Him. They will see Him face to Face and no one has any excuse, but when we read about Jesus separating the sheep and the goats....it seems they are judged according to what they did or did not do. "The King will reply, 'I tell you the truth, whatever you did for one of the least of these brothers of mine, you did for me.'"
Don't you think that is weird that all of a sudden Jesus is judging by works alone? The believers in Jesus have been saved by grace but the others will be judged by their works or lack of works? Or so it seems to me. Could it be possible that those that walked in God's ways long, long ago...who believed in God and helped others in need and showed the fruits of the Spirit, may be given an opportunity at this time to recognize Jesus as the God they worshiped?