A past-tense form can portray a future event as certain, lending the statement a sense of accomplishment or inevitability. Conversely, a present-tense verb may bring a remembered scene vividly before the listener (ḥikāyat al-ḥāl).
Yet neither effect belongs automatically to every past or present verb. Establish the actual time from context first, then ask why the chosen tense differs from that time. Rhetorical interpretation follows a documented contrast, not the verb form in isolation.