Why is worship of a Guru in a physical form considered essential for a devotee's progress in Chapter 11?

Chapter 11 presents the worship of a Guru in a physical (Saguna) form as essential because it serves as a necessary and accessible starting point for spiritual progress. The text argues that as long as the worshipper has a physical body, the Guru must also be in a physical form. This is because, as the chapter explains, devotion cannot manifest without meditating on a manifest form. A physical form is something one can see, place their head at the feet of, and exchange words of love with. This loving devotion is what causes the 'bud of the mind' to open. Chapter 11 clarifies that firm love for the Saguna is the very path that leads to the ultimate realization of the Nirguna (formless).