How does Dnyaneshwar Maharaj explain the connection between serving saints and acquiring true knowledge?

In Chapter 0, the text quotes Lord Dnyaneshwar Maharaj's commentary on the Shrimad Bhagavad Gita to explain the foundational role of service. Maharaj states, "If you desire to bring that beautiful knowledge into your mind, then serve the saints with your entire being." He poetically describes service as the "doorway" to the "treasure of knowledge." The prescribed method is to surrender at the feet of the saints with one's body, mind, and soul, and to perform all service without ego. By doing so, the saints will then impart the requested knowledge, which will enlighten the heart and ensure that doubts will not arise, leading to true spiritual understanding.