Everything you need to understand or teach Small Gods (novel) by Terry Pratchett.
In Terry Pratchett's Small Gods, the God Om rises from his existence as a lowly tortoise back into godhood. His disciple Brutha rises with him, becoming the leader of a newly enlightened nation.
Outside the Omnian Citadel at Kom, Novice Brutha's gardening duties are interrupted by a talking tortoise. The animal claims to be the Great God Om himself, trapped in the form of a reptile. Brutha is dubious, but nevertheless...
Small Gods: A Novel of Discworld Lesson Plans contain 99 pages of teaching material, including: