The text in Chapter 30 mentions that Sai's grace bestows 'inconceivable great power.' What kind of power is this referring to?

As detailed in Chapter 30, the 'inconceivable great power' bestowed by Sai's grace is not worldly or material, but profoundly spiritual. The verse clarifies that this power manifests as the 'wealth of discrimination between Self and non-Self' and the attainment of 'all knowledge.' This refers to the highest form of spiritual wisdom, Viveka, which is the ability to distinguish the eternal reality (Self) from the transient, illusory world (non-Self). Therefore, the power granted by Sai is the ultimate knowledge that leads to spiritual liberation and enlightenment, not temporal strength or riches.