What qualities of an effective spiritual narration are described at the beginning of Chapter 21?

The beginning of Chapter 21 of the Sai Satcharitra beautifully describes the ideal impact of spiritual storytelling. It suggests that a speaker's words are only truly effective if the listener is moved and experiences a physical and emotional response. The text questions the use of words if "the listener does not sway upon hearing them, if the hair on the body does not stand on end." It further states that narrations are futile if the listeners are not delighted, if their throats do not "choke up with emotion," and if "tears of love and joy do not flow from the eyes." This introduction in Chapter 21 sets a high standard for spiritual discourse, emphasizing that its purpose is not just to inform but to create a profound, transformative experience in the heart of the listener.