What is the primary message of Chapter 4 of the Sai Satcharitra regarding the purpose of a saint's incarnation?

Chapter 4 of the Sai Satcharitra explains that saints incarnate on Earth during times of significant societal and religious decay. The text describes that when people lose their way, disrespect religious teachers, ignore proper conduct, and become consumed by worldly desires for wealth and status, saints descend to restore order. As mentioned in this chapter, their purpose is to awaken religion, protect the humble and weak, and destroy irreligion. It emphasizes that saints are naturally liberated beings whose incarnation is purely for the benefit of others, as they have no self-interest, and they work to uplift the distressed before their mission is fulfilled.