What is the meaning and importance of 'one-pointed devotion' as described in the text?

Chapter 25 emphasizes that 'one-pointed devotion' is the primary thing Sai Baba desires from his followers. The chapter begins by stating that Sai is the supreme embodiment of mercy and a devotee who is faithful and filled with this devotion will not lack anything in attaining their desires. It even references Krishna's words to Uddhava, "The Sadguru is indeed My own form," suggesting that worshipping the Sadguru with love is the essence of one-pointed devotion. The text further explains that once a devotee establishes this unwavering faith, Sai wards off all their misfortunes, removes their suffering, and grants their desired objects, showcasing the immense power and benefit of such focused faith.