The author is re-telling an existent medieval text of the Catholic Church that was made morally instructive, and balancing the events through the medium of the sarcastic narrator and his ability to lucidly illustrate the most absurd behavior with no detectable opinion as to how the reader should judge it.
A writer is recounting an old Catholic Church text that has been adapted to be more morally instructive, using a sarcastic narrator to explain the most absurd situations without expressing any personal opinion on what the reader should think or feel.