How does Chapter 22 of the Shri Sai Satcharitra use the analogy of a snake and a rope to describe the Sadguru's nature?

Chapter 22 explains that the Sadguru is the ultimate source of both illusion and reality, using the metaphor of a rope mistaken for a snake in dim light. The text states that the Guru is the creator of the snake-like illusion and the fear it induces, but He is also the one who reveals the truth of the rope, thereby removing that fear. This chapter posits that before this illusion, in total darkness, there was neither snake nor rope, only the formless existence which is also the Guru. Thus, He is presented as the origin of illusion and the ultimate dispeller of it, the one who both creates and removes the fear of worldly existence.