According to the Sai Satcharitra, what is the proper way to cultivate true spiritual knowledge and devotion?

According to Chapter 48 of the Sai Satcharitra, true spiritual knowledge cannot be attained without love, as knowledge without love is described as dry and useless. To manifest the flame of knowledge, one must first have a theistic mind and a state of faith, which form the devotee's heart, described as a lamp-dish. The wick of this lamp must be lit with the oil of uninterrupted love. Where there is love, devotion naturally resides, bringing with it peace and detachment. The text emphasizes that without deep love, spiritual practices like listening to and reading scriptures are ultimately fruitless.