Chapter 4 discusses the decay of religion and the purpose of a saint's incarnation. How does the text explain the saint's role in protecting the established social and religious order?

Chapter 4 of the Sai Satcharitra presents a complex role for saints in times of decay. It states that a saint's incarnation is necessary when societal structures are in chaos, such as when Brahmins despise their own stage of life and Shudras try to become Brahmins. The text explicitly says saints descend 'to protect the system of castes and stages of life, and to destroy irreligion.' Their purpose is to reawaken religion when it has faded and people have lost their way, obsessed with worldly matters. By protecting the humble, the poor, and the weak, and re-establishing faith, the saint helps restore balance and provides a path for self-upliftment that had been lost, as explained in this chapter.