سورة Ar-Room 30:60

فَٱصْبِرْ إِنَّ وَعْدَ ٱللَّهِ حَقٌّۭ ۖ وَلَا يَسْتَخِفَّنَّكَ ٱلَّذِينَ لَا يُوقِنُونَ ٦٠

So be patient, for the promise of Allah certainly is true. And do not be disturbed by those who have no sure faith