لقد حفظتَ التوراةَ
You have certainly memorized the Torah.
The example addresses someone who already knows that they have memorized it. Merely informing them of their own deed is not the central new information. Rather, the speaker may be showing that the speaker knows of their accomplishment.
This illustrates the implied benefit of reporting. The addressee knows the event, while the newly conveyed matter is the speaker’s awareness. Nevertheless, the context determines an utterance’s function; no sentence has a single rhetorical purpose in every situation.