How does Chapter 4 describe the selfless mission and nature of saints like Sai Baba?

Chapter 4 profoundly illustrates the selfless nature of saints, stating their incarnation is purely for the sake of others with no personal self-interest. They are described as being naturally liberated souls who are always ready to uplift the distressed. The text uses a beautiful metaphor, explaining that saints fill the foundation of Renunciation (Nivritti) and build a temple of Ultimate Truth, all while using the framework of Worldly Activity (Pravritti) to easily uplift devotees. Their mission involves performing the work of religion and awakening faith. As Chapter 4 concludes, once their specific work is fulfilled and their mission is complete, they end their incarnation, having served their divine purpose of protecting the humble and restoring righteousness.