What are some of the praises and metaphors used to describe the Sadguru in the beginning of Chapter 18?

The opening of Chapter 18 lavishes praise upon the Sadguru, employing several powerful titles and metaphors. The Sadguru is hailed as 'the supreme Eternal one,' 'the Truth of Brahman,' and the 'Ruler of Maya,' who shows the world to be an illusion through experience. As Chapter 18 states, he is described as being beginningless, endless, and beyond duality, establishing Him as the ultimate teacher of the knowledge of the Self. A key metaphor used is that of a salt doll entering the ocean, which symbolizes how a devotee dissolves their individual identity upon approaching the Guru, becoming one with them.