How does Sai Baba describe the importance of faith and patience for spiritual progress?

Sai Baba teaches that full faith and patience are absolutely essential for spiritual realization, personifying them as Parvati and Shiva. Chapter 37 explains that unless Their hands of grace are on one's head, the Lord of the Universe dwelling in the heart cannot be seen. The great Guru Sai Nath, whose words hold infallible power, advised that with just a little patience of faith, one can attain great glory. This underscores that these two virtues are the foundation upon which one can cross the dark ocean of worldly existence and achieve the highest goal.