How does Chapter 37 redefine the concepts of death and heaven, and what does it identify as the 'nooses of death'?

According to the teachings in Chapter 37, death is not an end but a transition where the manifest form returns to the unmanifest state from which it came. The chapter identifies the true 'nooses of death' as adharma (unrighteousness), ignorance, anger, and hatred. It states that one who completely crosses these enters the heavenly world. However, heaven itself is redefined not as a physical place but as the state of realizing the Vairaj, or the Cosmic Self. This divine heavenly state is described as being free from disease, worry, sorrow, hunger, thirst, and the fear of death, a state where the soul moves about completely fearless.