وَكَمۡ أَهۡلَكۡنَا مِنَ ٱلۡقُرُونِ مِن بَعۡدِ نُوحٍ ۗ وَكَفَىٰ بِرَبِّكَ بِذُنُوبِ عِبَادِهِۦ خَبِيرًا بَصِيرًا
How many generations have We destroyed after Noah? and enough is thy Lord to note and see the sins of His servants.<br/>
How many - in other words, many - generations, communities, We have destroyed since Noah! And your Lord suffices as One Informed and Beholder of the sins of His servants, Knower of the hidden and manifest aspects of these [sins] (bi-rabbika, 'your Lord', is semantically connected to bi-dhunoob, 'of the sins').