According to the beginning of Chapter 21, what makes a spiritual story or narration truly effective?

The opening of Chapter 21 sets a high standard for what constitutes an effective spiritual narration. It suggests that a speaker's words are essentially futile if they do not produce a profound physical and emotional reaction in the listener. The signs of an impactful story, as described in this chapter, include the listener swaying upon hearing the words and the hair on their body standing on end. The narration is considered successful only if the listeners are delighted, their throats choke up with emotion, and tears of love and joy flow from their eyes, indicating a deep connection to Baba's captivating speech.