"And many generations between them," meaning: And We destroyed generations, that is: nations. Qatadah said: The generation is seventy years.
﴿وقرونا بَين ذَلِك كثيرا﴾ أَيْ: وَأَهْلَكْنَا قُرُونًا يَعْنِي: أُمَمًا. قَالَ قَتَادَةُ: الْقَرْنُ: سَبْعُونَ سَنَةً
