If a theme were always repeated in exactly the same wording, it could become a familiar sound that a listener no longer examines carefully. Qur’anic recurrence often works through renewed presentation, awakening attention and bringing different dimensions into view.
Example: an account of a community’s disobedience may first clarify the cost of rejecting truth, elsewhere function as a warning, and elsewhere teach believers perseverance. These are not necessarily three useless copies of one report.
An interpreter of a recurring narrative should compare its other appearances while also studying the new local context.