[It is] the promise of Allah. Allah does not fail in His promise, but most of the people do not know.
The Saheeh International Quran Translation
وَعْدَ ٱللَّهِ لَا يُخْلِفُ ٱللَّهُ وَعْدَهُۥ وَلَٰكِنَّ أَكْثَرَ ٱلنَّاسِ لَا يَعْلَمُونَ[It is] the promise of Allah. Allah does not fail in His promise, but most of the people do not know.