What is the role of a Guru in a spiritual aspirant's journey as described in Chapter 17?

Chapter 17 of the Sai Satcharitra highlights the indispensable role of the Guru in guiding a spiritual aspirant. The text states that the Guru's function is to reveal that which is beyond the grasp of ordinary means. As the chapter puts it, the Guru shows with his own hand the place where even the sun's rays cannot see, where the intellect turns back, and where the steps of the Vedas cannot enter. This illustrates that the Guru provides direct insight into profound truths that are inaccessible through intellect or scriptural study alone, making the Guru's guidance essential for attaining ultimate knowledge.