Based on Chapter 39, what was the deeper purpose of Sai's incarnation and arrival in Shirdi, and who were the primary beneficiaries of his grace?

Chapter 39 of the Sai Satcharitra posits a profound reason for Sai's presence in Shirdi. It states that his arrival was not a random event; he came to Shirdi of his own accord out of a 'great concern for the upliftment of his devotees.' The narrative emphasizes that individuals like Chand Patil were merely instruments in this divine plan. The chapter specifically identifies the intended beneficiaries of his grace as 'The dull-witted, the fallen, and the poor, those without vows, penance, or sacraments—simple and faithful people.' It poses the rhetorical question, 'who else but Sai would uplift them?', highlighting his mission to elevate the humble and devout.