In "Book Six" of The Poisonwood Bible, Adah says that "this is the story I believe in," and proceeds to detail a version of the story of human creation.  She says that the first people held on to the bare necessities and created voodoo as their religion.  In this religion, life and death are regarded simultaneously--death is not feared or deemed as a separate entity.  The two are part of a process of existence.  She recalls a time from Kilanga when Nelson told her that the word "muntu" was used for both people who are alive and people who are dead.  When she was a child, Adah did not understand this concept, but now she does.  So Adah now believes that we must worship both the living and the dead to understand life and the secrets it holds.