How do saints like Sai Baba embody the principle that 'The World is My Family' and guide others toward realizing this oneness?

According to Chapter 4, saints are the living embodiment of universal love and oneness. They incarnate purely for the sake of others, with no self-interest, to lift the distressed. The text explicitly states that saints consider 'The World is My Family' and act as a support for those in need. Their role is compared to a philosopher's stone, but even more extraordinary. While a philosopher's stone turns iron to gold, Chapter 4 explains that saints give their own form, which is Self-realization, to their devotees. They guide followers to discard the feeling of duality and realize that everything is Brahman, thereby helping them attain supreme devotion.