Certainty of Allah's Word

وَأَقْسَمُوا۟ بِٱللَّهِ جَهْدَ أَيْمَـٰنِهِمْ ۙ لَا يَبْعَثُ ٱللَّهُ مَن يَمُوتُ ۚ بَلَىٰ وَعْدًا عَلَيْهِ حَقًّا وَلَـٰكِنَّ أَكْثَرَ ٱلنَّاسِ لَا يَعْلَمُونَ

And they swear by Allāh their strongest oaths [that] Allāh will not resurrect one who dies. But yes - [it is] a true promise [binding] upon Him, but most of the people do not know.