What are the 'eight ministers' and the 'sword of Knowledge' that are mentioned in Chapter 16's description of the Guru-King?

In the elaborate allegorical description found in Chapter 16, the Guru-King is served by eight ministers who represent key spiritual qualities and practices. These are listed as Detachment, Devotion, Pure Knowledge, Hearing (Shravan), Reflection (Manan), Meditation (Nididhyasan), Self-investigation, and Realization. The chapter also describes a 'sword of Knowledge' that shines brilliantly in the Guru's hand. Its power is such that the mere sight of it being raised to strike causes the 'tree of worldly existence' to tremble in fear, symbolizing knowledge's power to sever attachment to material life.