What does Chapter 37 identify as the root cause for being trapped in the eternal cycle of birth and death?

The core reason for being trapped in the cycle of worldly existence (Samsara), as detailed in Chapter 37, is the delusion of separateness from the divine. The text states that a person who holds the knowledge of difference, thinking "Parabrahman is different from me; I am not that, I am something else," is always subject to death. This perception of duality, where the soul is seen as distinct from the Supreme Reality (Brahman), is a product of ignorance. It is this fundamental error in understanding that perpetuates the eternal cycle where death follows birth, and rebirth follows death.