According to Chapter 30, what is the connection between past samskaras, Sai's grace, and the attainment of spiritual knowledge?

Chapter 30 explains a nuanced relationship between past impressions (samskaras) and divine grace. It suggests that for those who hold onto Sai's feet, a 'dawn of past good impressions' occurs. However, the chapter also offers hope for those who feel they are 'devoid of proper samskaras,' stating that Sai does not forsake them. It is ultimately Sai's grace that is paramount, bestowing 'inconceivable great power' upon a devotee. This grace is what leads to the attainment of all knowledge, specifically the 'wealth of discrimination between Self and non-Self,' showing that divine intervention can transcend a perceived lack of past merit.