If it was possible, would you choose to allow living persons to go into the afterlife and ensure that those who ought to be punished in the afterlife are in fact punished in the afterlife?
The thing that spawned this particular idea was a discussion with someone about international law, war crimes and the impossibility of punishing national leaders in international law – albeit that is a condensed form of the discussion and my understanding of international law comes via people who have done all the studying and knowledge gathering, which means that while I can convey the concepts my actual expertise is minimal.
I was discussing the means by which a country, the leader of a country and a group which functions as a country but for all legal purposes does not exist could or could not be prosecuted when the thought occurred to me as to what happens to the leaders of nations that we condemn after they die.
There are an almost limitless number of things to consider, hypothetical though it is, that make such an idea fraught with peril. One of the most prominent that comes to mind is similar to a problem that arose regarding… the Mormons I think, several years past where their church or at least elements of it were retroactively baptising well known people who had died. Their intent was, well, obvious however it brings to light an unfortunate likelihood to the surface.
In such a context where the living can go to the afterlife and ensure the punishment of those who escaped punishment in this life, there would be I fear a near irresistible urge to undertake such a task on an entirely personal level with no consideration for the spirituality (or lack thereof) of the person under question for punishment in the afterlife. The simple fact is that even different Christian denominations have differing opinions on how someone is/should be punished in the after, even what is/is not punished, before even touching upon interfaith concerns.
There are also questions as to whether such a thing, punishing someone in the Afterlife, would ever be a question of legalities. By the very nature of the person being dead it could be construed that the person in question can no longer have the laws of living mankind applied to them. Which brings into question a whole other set of questions based around whether the laws of the afterlife are the same, or more to the point vastly different, to those of the this life.