Quranic Narratives and Their Purpose

كَذَٰلِكَ نَقُصُّ عَلَيْكَ مِنْ أَنۢبَآءِ مَا قَدْ سَبَقَ ۚ وَقَدْ ءَاتَيْنَـٰكَ مِن لَّدُنَّا ذِكْرًا

Thus, [O Muḥammad], We relate to you from the news of what has preceded. And We have certainly given you from Us a message [i.e., the Qur’ān].