Repetition is used in literature for emphasis. It is a literary device that involves repeating a word or phrase multiple times to create a sense of importance or to draw attention to a particular idea or theme. Repetition can also be used to create a specific rhythm or pattern in a text. By repeating certain words or phrases, the writer can make them more memorable and powerful, and can reinforce the overall message of the text. Overall, repetition can be a powerful tool for writers to emphasize key points and ideas, and to engage and impact their readers.