What philosophical teachings are presented in Chapter 31 before the main narrative about the sannyasi begins?

Before detailing the story of the sannyasi Vijayananda, Chapter 31 presents profound philosophical teachings about the end of life. The text emphasizes that one's state of mind at the moment of death determines their next birth, using the analogy of a worm becoming a bumblebee. As explained in these verses from Chapter 31, this is why the constant practice of remembering God's name and engaging in satsang (holy company) is crucial. The goal is to ensure that one's consciousness remains fixed on God even in the final, difficult moments, thus preventing the efforts of a lifetime from being wasted and ultimately attaining freedom from the cycle of birth.