Describe symbolism in The Demonologist: The Extraordinary Career of Ed and Lorraine Warren by Gerald Brittle

With a plot revolving around demons, the idea of good vs. evil is impossible to miss in this book. The evil of the equation is represented by the spirits that are battled by the Warrens, and though the actions of human beings within the book, whether purposeful or not.

The good of the world, on the other hand, is symbolized by the Warrens, by God, and by positive forces surrounding the characters of the story.