Can you elaborate on how Baba's grace was determined and how his actions could be surprising?

According to the texts in Chapter 27, the method by which Sai Baba bestowed his grace was not uniform but was determined by the devotee's 'authority, mental disposition, service, and the devotee's love.' His actions were described as wonderful and surprising. For instance, when he became pleased with someone, he would grant them grace, sometimes through unexpected means like casual joking and humor, fulfilling their purpose when it was not in anyone's thought. This shows that his blessings were highly personalized and often manifested in surprising ways, tailored specifically to the individual's state and needs, rather than following a predictable pattern.