Can you explain the relationship Baba saw between faith and patience?

According to Chapter 19, Sai Baba viewed Faith (Nishtha) and Patience (Saburi) as deeply interconnected and essential qualities for a disciple. He reveals that these were the "two paise" he offered his Guru, signifying their value in the spiritual path. He beautifully illustrates their bond by stating, "Faith and Patience are like two sisters, dear as life to each other." This metaphor suggests they are inseparable, mutually supportive, and function as a pair. Baba also notes that a Guru expects "strong faith at the Guru’s feet and the strength of courage which is patience," reinforcing the idea that one without the other is incomplete for a devotee seeking spiritual advancement.