According to Chapter 31, what is the philosophical reason for practicing the remembrance of God's name?

Chapter 31 explains that the practice of remembering the Name is essential because one's state of mind at the time of death determines the soul's next state. The text posits that whatever a person meditates on in their final moments is the form they will attain in their next life. Therefore, as this chapter details, the purpose of lifelong practice and "satsang" (association with saints) is to ensure that the remembrance of God remains steadfast even during the difficult time of death. This prevents one's life from being "in vain" and allows the soul to merge with God, becoming free from the cycle of birth.