[ He nods slowly, thoughtfully, and when he speaks again there's a slight rustling of non-existent leaves under his voice ]

I don't know quite how it works, there are any number of different systems of power he could be drawing on to do it. In my world it would likely be contract draw up with Death itself, to relinquish any claim over the fallen in his domain. Or perhaps he has possession of our souls and it is simpler to keep them in our bodies than any other vessel. Whatever the method, the effect is the same:
When someone dies here, their body is collected, and the next morning they awake in their bed as normal.

Thankfully it is not something I've had to endure, but I know of some who have. It does not sound a pleasant experience.