What does your faith or belief system teach about the mechanics of death?
Firstly, Paganism as a whole has no true Doctrine to speak of. We have myths and stories, and beliefs that are held in commonality. If something makes sense, it is open to be adopted, and that is how communities are built and grow. So what is below is
my teachings, built upon the stories we have from Norse Paganism (Heathenry). To illustrate the notion as well, I will be using the worst extreme that can be thought of for the modern age - Hitler - which may make some uncomfortable. It is not to condone what was done,
absolutely the contrary, only to illustrate the universality of Death in Heathenry.
When one dies, their body - and
many of the elements of their soul - decompose and are returned to the Earth. From what happens then, there are two things; one belief, and one fact.
By belief, all dead - of whatever creed or life path - wash upon Náströnd, the Corpse Shore. There the dragon Níðhöggr takes the blood from our corpses, and releases it into Helheimr. While Náströnd bears a reputation as a realm of suffering and torment for murderers, adulters, and oath-breakers, such is a product of Christianization, and pre-Christianity no such mentality existed. The dead are the dead, and there is no punishment eternal for mortal actions. For the example, Hitler's spirit walks the Halls of his Ancestors as Hitler no more; neither Austrian, a Nazi, or even a human.
What factually happens after death is where any glory or punishment comes in. What lives on after we die, for certain, is the name we leave behind. We are remembered by our actions, and this memory persists as long as it does. To the example, Hitler is remembered horribly, and as a monster. His legacy is tainted and corrupted, and even the name "Adolf" bears the shadow of his actions. This dishonor has persisted strongly for 80 years, and shows no sign of fading (despite lingering admirers). This is our "Hell", if such a punishment is warranted.
Yet some have faded; to give examples, Julius Caesar is not remembered with the same revulsion and hatred that he may have been in the 1st Century BCE. Gilgamesh is not as revered as he was in his time. As they pass into legend and myth, the effects of their actions blur and fade as well, and it becomes little more than a name.