Can you explain the importance of 'direct experience' versus 'verbal knowledge' for a Sadguru as detailed in Chapter 48?

Chapter 48 places supreme importance on 'direct experience' (Anubhava) as the primary qualification of a Sadguru, contrasting it sharply with mere 'verbal knowledge.' The chapter states that while some teachers may have vast verbal knowledge and give very sweet explanations of principles, their knowledge is "verbally hollow" if it lacks the backing of self-experience. It clarifies that only an experienced person can manifest the pure taste of spiritual experience for others. According to this chapter, a teacher who does not have direct experience themselves has nothing of substance to give to a disciple. Therefore, the authority to truly enlighten a disciple and be called a Sadguru belongs exclusively to one who is both a possessor of complete verbal knowledge and a giver of direct, full experience.