How does the text explain the nature of the Soul and its interaction with illusion, or Maya?

The teachings in Chapter 19 explain that the Soul is pure consciousness, changeless, and formless, remaining distinct from the body, senses, and mind. The Soul's appearance in the world is attributed to the actions of Maya, the Unmanifest Nature. This interaction is illustrated with analogies: the Soul is like a pure crystal that appears to take on the colors of nearby objects but remains untainted and unchanged. Maya, the illusion, is compared to a mirage on a plain or mistaking a coiled rope for a snake. Therefore, the ego of "I am the body" is a false superimposition, a bondage that does not actually alter the Soul's pure and liberated nature.