Why do saints choose to incarnate on Earth, and what is their primary motivation as described in Chapter 4?

Based on the teachings in Chapter 4, saints are naturally liberated beings who choose to incarnate on Earth not for themselves, but purely for the sake of others. Their primary motivation is to uplift the distressed, protect the humble, poor, and weak, and destroy irreligion. When people become lost, focusing only on worldly happiness from wealth, status, and family while ignoring the ultimate spiritual goal, saints descend to reawaken religion. The chapter emphasizes that their incarnation is entirely selfless, as they have no personal interest or agenda to fulfill.