Teaching what is not yet known is the first benefit. Qur’anic audiences are not identical in knowledge. One listener may be unfamiliar with a legal obligation, another with prophetic history, and another with the evidence concerning the Hereafter.
A recurring theme therefore reaches listeners at different stages. Someone who missed an earlier occasion, or failed to grasp the point initially, may receive genuine instruction when it is stated again.
Illustration: a teacher describes justice to one gathering. A later gathering hears the same principle in a new form; those who did not know it are not experiencing pointless duplication but receiving the knowledge for the first time.