According to Chapter 4 of the Sai Satcharitra, what societal conditions lead to the incarnation of saints on Earth?

Chapter 4 explains that saints incarnate when there is significant societal and religious decay. This includes times when Brahmins despise their own caste, religious teachers are insulted, and people disregard religious teachings, with everyone considering themselves a scholar. The chapter also mentions a decline in moral conduct, such as Brahmins openly consuming liquor and meat, and a rise in sectarian hatred. This widespread distress and the decay of religion is the time a saint's incarnation becomes necessary to reawaken faith and protect the humble, poor, and weak.