About 15 or 20 years ago, I read in a collection a complicated short story (or maybe novelette) in which angels sometimes appear. It takes place in a world not very different from ours, apart from these apparitions. When they appear, the angels do cure some people who are ill or crippled, but also cause destructions, cripple some healthy people and cause the death of others. What is remarkable about those casualties is that surviving bystanders can see whether the people killed go to Heaven or Hell.
The story is about a few people whose lives were very much affected by such apparitions, but that is all I can remember.