According to the teachings in Chapter 37, what is the fundamental reason people get stuck in the cycle of birth and death?

Chapter 37 explains that the root cause for being trapped in the cycle of worldly existence (Samsara), where rebirth follows death, is a deluded sense of separation from the divine. This delusion arises from ignorance. The text states that a person who holds the belief, "Parabrahman is different from me; I am not that, I am something else," is always subject to death and rebirth. This perceived knowledge of difference, or duality, is what perpetuates the eternal cycle. The chapter implies that realizing the oneness of the divine principle that pervades everything is the key to breaking free.