Chapter 10 mentions that the Guru 'strikes a nail over the lines of destiny.' What is the significance of this phrase?

The phrase 'strikes a nail over the lines of destiny' from Chapter 10 signifies the Sadguru's profound power to alter a devotee's fate. The text explains that when a person places complete faith in the Guru's feet, He can intervene and change what seems pre-ordained. This concept underscores the idea that the Guru's grace transcends the conventional laws of karma and destiny. As described in Chapter 10, by entrusting oneself to the Sadguru, one can overcome the worldly existence (Samsara) and cross the three types of miseries, highlighting the transformative power of pure devotion and surrender.