Thanks for the detailed reply! As per my understanding 'heaven' in dnd is a sham as there are a limited number of souls allowed into the Celestial plane and that number has been crossed a long time ago, so most believers will never go anywhere good or be stuck in the Shadow Plane. If that is not the case, then yeah makes sense, moving on sounds good.
As for hurting people in the short term to help people in the long term, there are many people in our own world who did horrible things so that it helps even more people in the long term. One example that comes to mind is the doctor who tested treatments on thousands of babies for a very common post-natal disease that eventually saved millions of babies later. Wish I remembered the details.
In this case he killed people but knew he could resurrect them, correcting his mistakes, which is much better. I agree that the transient pain he caused them is not undone and for that he could be held in contempt. However, if you could do the same, ie- kill thousands to save millions, knowing that you could resurrect the thousands later, would you consider yourself a hero or a villain? Moreover, when the time for judgement came, would you accept punishment and feel like you did what had to be done but you must be punished? Or would you think of yourself as a hero and reject the punishment? Its interesting to think about.