What does the text identify as the fundamental reason a person remains trapped in the cycle of birth and death?

Chapter 37 identifies the root cause of being trapped in the cycle of worldly existence (Samsara) as a specific kind of ignorance and dualistic thinking. The text states that 'Adharma (unrighteousness), ignorance, anger, and hatred—these are the nooses of death.' More specifically, it highlights the intellectual and spiritual error of seeing a separation between oneself and the ultimate reality. As Chapter 37 clarifies, the person who believes 'Parabrahman is different from me; I am not that, I am something else' possesses a 'knowledge of difference' that makes them 'always subject to death.' This delusion of separateness is what keeps the cycle of birth and death turning eternally.