What qualities define a successful spiritual narration, according to the beginning of Chapter 21?

The initial verses of Chapter 21 of the Sai Satcharitra define a successful spiritual narration by its profound effect on the listener. According to the text, a speaker's words are only truly meaningful if the listener "sways upon hearing them" and the "hair on the body stands on end." The narration is considered futile if it fails to delight the audience, cause their throats to "choke up with emotion," or bring "tears of love and joy" to their eyes. As described in Chapter 21, this indicates that the goal of such storytelling is not merely intellectual understanding but the evocation of a deep, visceral, and transformative emotional experience that connects the listener's heart to the divine subject matter.