Chapter 16 mentions a 'sword of Knowledge' and a 'tree of worldly existence.' What is the connection between these two metaphors?

In Chapter 16, the 'sword of Knowledge' is a powerful metaphor for the Guru's wisdom, described as a brilliantly shining sharp blade. The 'tree of worldly existence,' or 'Bhav-vriksha,' represents the cycle of life, death, and worldly attachments. The chapter illustrates a direct relationship between them: the mere sight of the Guru's hand raised to strike with the sword of Knowledge causes the tree of worldly existence to tremble in fear. This imagery conveys that the Guru's spiritual teaching and wisdom have the power to sever the roots of worldly illusion and attachment, freeing the devotee from its grasp.