Karaman

“Every year there was an important poetry contest at the fair of ‘Ukaz, just outside Mecca, and the winning poems were embroidered in gold on fine black cloth and hung on the walls of the Kabah. Muhammad’s followers would, therefore, have been able to pick up verbal signals in the text that are lost in translation. They found that themes, words, phrases, and sound patterns recurred again and again—like the variations in a piece of music, which subtly amplify the original melody, and add layer upon layer of complexity. The Qur’an was deliberately repetitive; its ideas, images, and stories were bound together by these internal echoes, which reinforced its central teaching with instructive shifts of emphasis. They linked passages that initially seemed separate, and integrated the different strands of the text, as one verse delicately qualified and supplemented others. The Qur’an was not imparting factual information that could be conveyed instantaneously. Like Muhammad, listeners had to absorb its teachings slowly; their understanding would grow more profound and mature over time, and the rich, allusive language and rhythms of the Qur’an helped them to slow down their mental processes and enter a different mode of consciousness.”
― Karen Armstrong, Muhammad: A Prophet for Our Time