The Question and Answer section for As I Lay Dying is a great resource to ask questions, find answers, and discuss the novel.
Obligation is an important theme of the novel. The family is bringing Addie's body to Jefferson, to bury her as she wished to be buried. There is much talk about duty. Addie herself speaks of duty regarding her relationship to Anse; to hear her...
Cash is a martyr who sacrifices his own well-being to provide for others. In this sense he becomes a Christ-figure in the story.
I would consider Dewey Dell. She talks to cows.