This does not answer the question of how to teach the book. I think I will do it thematically, picking a key word, a recurring concept. Of course, I have to go with the Sunday School literature, but I rarely let that control my teaching.
Curse is the word I might use in one of the studies.
Of course, this is to say nothing of the book's literary quality, I want to write fiction like this, but it will never get published by Christian publishers.