How does Chapter 18 describe the effect of a Sadguru's grace on a person's perspective?

According to Chapter 18, receiving the Sadguru's grace has a profound effect on a person's perception. The text states that when one is fortunate enough to fall within the Guru's grace, 'the false logic of "mine" and "thine"... finds no place.' This means that the illusion of separateness and the distinctions between 'ours' and 'strangers' dissolves. Furthermore, Chapter 18 explains that the Sadguru makes the Unperceivable, which the Vedas debate endlessly, effortlessly known to devotees, completely transforming their understanding of reality.