According to the philosophy in Chapter 37, what causes a soul to be trapped in the cycle of birth and death, and how can one be liberated from it?

Chapter 37 explains that the root cause of being trapped in the cycle of worldly existence (Samsara) is the deluded knowledge of difference. The belief that 'Parabrahman is different from me; I am something else' perpetuates the endless cycle of birth and death. Liberation requires overcoming this ignorance. The text points to two key methods for freedom. First, one must cross over the 'nooses of death'—unrighteousness, ignorance, anger, and hatred. Second, and most essentially, one must embrace the science of the oneness of Brahman and the Self. By offering every action to God and realizing this unity, a soul can attain the place of fearlessness, thus breaking free from Samsara.