YS, by the Quran which decrees, truly, you are one of the Messengers, on a Straight Path, according to the order descended by the All-Mighty, the Most Merciful. In order that you may warn a people whose forefathers were not warned, so they are heedless. Indeed the Conjecture of punishment has proved true against most of them, so they will not believe. Verily! We have put on their necks iron collars reaching to the chins, in such a way that their heads are raised up, and We have put a barrier before them, and a barrier behind them, and then we covered them up so that they cannot see. It is the same to them whether you warn them or you warn them not, they will not believe. You can only warn him who follows the Reminder, and fears the Most Gracious without seeing Him. Bear you to such one the glad tidings of forgiveness, and a generous reward.