DescriptionPersonal narrative is a prose narrative relating personal experience usually told in first person; its content is nontraditional. "Personal" refers to a story from one's life or experiences. "Nontraditional" refers to literature that does not fit the typical criteria of a narrative.
College essay—basically the same as a personal statement. (I'll be using the terms interchangeably.) Essay prompt—a question or statement that your college essay is meant to respond to. Supplemental essay—an extra school or program specific essay beyond the basic personal statement.
The main idea of the passage above from Cotton Mather's "The Wonders of the Invisible World" is to justify the outcome of the trials. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.