[Giovanna Clairval]

Chris is right! I'm not drawn in it either.

And the mysterious word must be "relegated", I'll bet.

May I suggest that you begin with an angel wandering on Earth? Or a human meeting a disgruntled angel? Or a child praying for someone to rescue her cat lost in a tree, with the subsequent arrival of an angel who unsuccesfully tries to climb up the damned tree (could be the same disgruntled one).
There are hundreds of ways... serious or humorous.

The rest of the info should be inserted little by little as the story progresses, possibly smoothly wowen into the fabric of it. As an example, a scene could show a very old lady who recalls what the ancestors said about angels collecting bodies (now, that was practical!).

Inserting info-dump in an unobstrusive way is called "Heinleining".

Good luck!