72:7
وَأَنَّهُمْ ظَنُّوا۟ كَمَا ظَنَنتُمْ أَن لَّن يَبْعَثَ ٱللَّهُ أَحَدًۭا ٧
Saheeh International
And they had thought, as you thought, that Allah would never send anyone [as a messenger].
Tafsir of "Ibn Kathir" (English)
And they thought as you thought that Allah will not send any Messenger.' meaning, Allah would never send a Messenger after this long period of time.This was said by Al-Kalbi and Ibn Jarir