According to Chapter 37, what is the true nature of heaven, and how does one attain it?

Chapter 37 offers a profound spiritual interpretation of heaven, defining it not as a physical location but as the state of the Vairaj, the Cosmic Being. This divine heavenly state is characterized as being free from mental grief, disease, worry, illness, and sorrow. In this state, as described in the chapter, one is not afflicted by hunger, thirst, or the fear of old age and death. According to the teachings presented here, one enters this heavenly world by entirely crossing the 'nooses of death,' which are identified as unrighteousness (adharma), ignorance, anger, and hatred. It is a state where the soul can move about completely fearless.