In mulling over the nature of heaven and hell, I recently found it interesting that the "full-death" occurrences in the Bible aren't used. We have at least two people in the Gospels who have died, and Jesus brought back to life: Lazarus, and the daughter of the President of the synagogue (Matthew 9:18-26). Although Luke 8:40-56 has the person named Jairus, and the daughter's age is around 12.
In the case of Lazarus, he was dead for about three to four days. Where was his soul during that time? Heaven or hell? An argument could be made that perhaps heaven, given that Martha said that she believed that Jesus was "the Messiah, the Son of God who was come into the world." Yet that interaction sounds like she believed it at that moment, so who knows what Lazarus believed?
We aren't told what his reaction was upon returning to life, but surely it would've given huge credence to the heaven/hell theology? If he were in hell, I assume he would've been enormously grateful that he had a second opportunity to not go there, and would've gone about the whole nation telling people what a horrible fate awaited them after death.
On the other hand, if he were in heaven, I wonder if he would've been as grateful. He might have gone about telling people how much better heaven was compared to Earth, and especially compared to hell. And possibly been a bit resentful that Jesus made him return to Earth.
Same with Jairus' daughter. I know some Christian traditions hold to the age of accountability, in that any child who dies below a certain age automatically goes to heaven. I'm not sure if that age extends to 12, but even if it does, surely the child would've talked about heaven, for the brief period of time in which she was there? Or hell -- wouldn't the first words out of her mouth be thanks that she was no longer there? Shouldn't her father have mentioned her eternal location?
Even Acts has the "full death experiences." Acts 9:36-43 has a disciple named Tabitha die, and Peter brings her back to life. She would've been pulled from heaven, and yet no mention of the glorious place that she once was at? Or regret that she had to leave it for a brief period of time?
Paul also brings someone back to life. In Acts 20: 7-12, he restores a youth named Eutychus. Although, the translation I'm using makes that a bit iffy, where Paul says for people to stop panicking, as there's still life in Eutychus. However, even if this youth was not dead, it sounds like he was one of the saved who was gathered to hear Paul talk. So if Eutychus was dead, then wouldn't he be in heaven?
Given the current focus on a person's location after death, these four examples don't seem to match up to that fervor. There's no concern as to the location of the person's soul for the daughter, and no rejoicing in the other three, if they are in heaven. There's no reaction from any of the people who were resurrected, as to what location they left. Leaving either should have produced some sort of strong emotion. Those witnessing the deaths shoud have mentioned something about the person being in heaven, or God calling the person home, or something.