Based on Chapter 51, what is the significance of 'rinanubandh' and past merits in a devotee's journey to their Sadguru?

According to Chapter 51, a devotee's connection to a Sadguru is profoundly influenced by their past actions and karmic ties. The chapter introduces the story of Kakasaheb by specifically mentioning his "rinanubandh," or bond from past lives, with Shirdi. It elaborates on this principle by stating that it is "due to the merits of past lives, the grace of the Supreme Lord is obtained." As described within Chapter 51, this divine grace is the very force that leads an individual to meet a Sadguru, which in turn strengthens the disciple's bliss. This establishes a clear link between past merits and the present opportunity for spiritual advancement under a Guru's guidance.