Why does Chapter 11 of the Sai Satcharitra argue that having a physical, manifest Guru is a necessary step for a spiritual seeker?

Chapter 11 of the Sai Satcharitra makes a strong case for the necessity of a physical, manifest (Saguna) Guru. The primary reason given is that the devotee, or worshipper, also has a physical form. The text logically states, "As long as the worshipper has a form (body), the Guru must also be in a physical form." It further elaborates that without meditating on a manifest form, loving devotion cannot properly develop, and the mind will not open. A physical Guru provides a tangible focus for worship—a being at whose feet one can bow, with whom one can exchange words of love, and who can be worshipped with offerings, making the Saguna form essential for spiritual advancement.