Why does Chapter 11 suggest that it's important to worship a Guru with a physical form?

Chapter 11 explains the importance of worshipping a manifest (Saguna) Guru by stating that as long as the worshipper has a physical body, the Guru must also be in a physical form. The text presents this as a determination of the scriptures, noting that for the formless, the formless is suitable. As detailed in Chapter 11, meditation on the manifest form is considered essential for devotion to arise. Without this loving devotion, the mind cannot blossom, which is a necessary step for spiritual progress. The chapter emphasizes that this Saguna meditation is a key to unlocking deeper spiritual experiences.