What are some of the key metaphors used in Chapter 18 to describe the Guru and the devotee's relationship with them?

Chapter 18 employs several evocative metaphors to illustrate the Guru's nature and the devotee's journey. One central metaphor is that of a salt doll entering the ocean; just as the doll dissolves and becomes one with the water, a devotee who approaches the Guru merges into the divine. Another beautiful comparison found in Chapter 18 is that the Guru is like the "rain clouds of the monsoon," showering the water of self-bliss upon all with love, nourishing their spiritual growth without discrimination or partiality.