Surah An-Nahl 16:38

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.

Translation: Saheeh International

Tafsir

And they swear by God their most earnest oaths in other words with their utmost earnestness therein that God will not resurrect the dead. God exalted be He says Nay He will resurrect them it is a promise binding upon Him both wa‘dan and haqqan are verbal nouns used for emphasis and are in the accusative because of the …

Excerpt from Tafsir al-Jalalayn, commentary on 16:38, via Quran.com. The reader has the full commentary and 9 more tafsirs.