How does Chapter 4 explain the mission of saints in terms of 'Nivritti' (Renunciation) and 'Pravritti' (Worldly Activity), and what is their ultimate objective?

As explained in Chapter 4, the mission of saints is profound and multifaceted. They are said to 'fill the foundation of Renunciation (Nivritti) and build the temple of Ultimate Truth.' This suggests their work is grounded in detachment. Simultaneously, around the 'frame of Worldly Activity (Pravritti),' they skillfully uplift their devotees, showing that worldly life can be a vehicle for spiritual progress. Their ultimate objective, as described in this chapter, is to perform the work of religion, awaken faith, and complete their specific mission for the benefit of humanity before ending their incarnation.