What is the power and significance of chanting Rama's name, as explained in the provided text?

The chanting of Rama's name is depicted as a practice with immense spiritual power and benefit. As detailed in Chapter 19, it is described as a form of non-dual worship that can lead one to become unified with Brahman and stop the cycle of birth and death. The text emphasizes its transformative power by citing the example of Valya, a robber who became the great sage Valmiki simply by repeating the name, even in reverse as 'Mara Mara'. The name is said to purify the fallen, bring deep gain, and offer million-fold benefits. It acts as a protector for the poor, with the power to destroy millions of obstacles wherever it is chanted.