The text describes Faith and Patience as 'two sisters.' Can you elaborate on the relationship between these two virtues as presented in the source?

The relationship between Faith (Nishtha) and Patience (Saburi) is depicted as intrinsically linked and mutually essential for a disciple. Chapter 19 describes them as 'two sisters, dear as life to each other,' a metaphor that emphasizes their inseparable nature on the spiritual path. They are first introduced together as the 'two paise,' the fundamental offering required to please the Guru. The text further reinforces this by stating that a Guru expects 'strong faith at the Guru’s feet and the strength of courage which is patience.' This implies that faith provides the conviction to trust the path, while patience provides the endurance to stay on it, making them a complete and necessary pair for spiritual attainment.