Based on Chapter 16, what is the ultimate goal of serving the Guru, and how does the Guru facilitate this process?

The ultimate goal of serving the Guru, as presented in Chapter 16 of the Sai Satcharitra, is to attain union with Brahman, or 'Sayujya.' The Guru facilitates this not by needing the service, but by fulfilling the disciple's desire for service and thereby making the disciple desireless. Even while appearing to don a "cloak of ignorance," the Guru imparts profound knowledge and sweet instruction to the ignorant. By wielding the "sword of Knowledge," he helps destroy the devotee's attachment to worldly existence. Ultimately, by creating a path of humble service and complete surrender, the Guru provides the means for the devotee to achieve the highest spiritual state.