مبشرين لأهل الإيمان والطاعة بالجنة والثواب
Giving the people of faith and obedience glad tidings of Paradise and reward.
ومنذرين لأهل الكفر والعصيان بالنار والعقاب
Warning the people of disbelief and disobedience of Fire and punishment.
Glad tidings and warning link human conduct to its ultimate consequences. They are not merely techniques of persuasion; their claims about the Hereafter are based on revealed information.
Reason can sometimes estimate the worldly effects of an action, but the precise nature and measure of its afterlife recompense are learned from reliable prophetic communication.