From the perspective of Chapter 4, what is the inherent nature of a saint, and what is their primary motivation for taking birth?

As detailed in Chapter 4, the inherent nature of saints is that they are already liberated beings who exist beyond the cycles of birth and death. Their primary motivation for incarnating is entirely selfless and for the benefit of others. The text explicitly states their 'incarnation is purely for the sake of others; they have no self-interest.' They are driven by a desire to uplift the distressed, protect the poor and weak, and destroy irreligion. Saints come to awaken religion and guide humanity back toward the ultimate goal when people have become lost in worldly pursuits.