What are the transformative effects of a Guru's grace on a devotee, as described in Chapter 18?

According to Chapter 18, the grace of a Sadguru has profound and transformative effects on a devotee. When one is fortunate enough to fall within the Guru's grace, the false logic of "mine" and "thine" disappears, erasing the sense of separation. The chapter explains that by the Guru's grace, worldly desires vanish, and the devotee becomes so immersed in spiritual truth that they may speak of knowledge even in their sleep. As Chapter 18 beautifully states, wisdom and renunciation, described as "twin fruits," come into the devotee's hands through the power of the Guru's grace. This grace opens the "eyes of the intellect," allowing the devotee to experience the celebrations of the Self.