Based on Chapter 51, what is the connection between one's past lives, the grace of the Supreme Lord, and meeting a Sadguru?

Chapter 51 explains a profound spiritual connection between past actions and present spiritual opportunities. It states that it is due to the merits accumulated in past lives that one obtains the grace of the Supreme Lord. This divine grace, in turn, is what leads an individual to a meeting with the Sadguru. The chapter emphasizes that this encounter is not accidental but a result of a pre-existing bond from past lives, referred to as 'rinanubandh'. This meeting with the Sadguru is what ultimately strengthens the bliss of the disciple, a principle that Chapter 51 prepares to illustrate through the story of Kakasaheb's relationship with Sai.