How do the teachings describe the nature and role of the Guru in a disciple's life?

According to the teachings in Chapter 18, the Guru is portrayed in many profound ways. The Guru is likened to the rain clouds of a monsoon, showering the water of self-bliss with love, and also to a mother who affectionately ensures a child takes medicine for their own health. The text states that the Guru is God manifest, embodying Brahma, Vishnu, and Maheshwara, and is essentially the Supreme Lord. Furthermore, the Guru is described as a mother, father, and the ultimate protector. The Guru's word acts as a guiding ray of light on the difficult path of worldly life, showing the true path to each person according to their worthiness.