What powerful analogies does Chapter 18 use to illustrate the relationship between a Guru and a devotee?

Chapter 18 employs several vivid analogies to explain the Guru-devotee relationship. The most striking is that of a salt doll entering the ocean, which signifies the devotee's complete and irreversible merging with the Guru. The Guru is also compared to 'rain clouds of the monsoon,' showering the water of self-bliss with love, which should be partaken of and shared freely. Finally, the Guru's gentle instruction is likened to a mother holding her child's chin to affectionately administer medicine, highlighting the caring and beneficial nature of His guidance.