ألم يروا كم أهلكنا من قبلهم من قرن مكناهم في اﻻرض ما لم نمكن لكم
Have they not seen how many a generation before them We have destroyed whom We had established on the earth such as We have not established you!
meaning, they had more wealth, children, buildings, abundant provision, riches and soldiers.
Allah said next,
وأرسلنا السماء عليهم مدرارا
and We poured out on them rain from the sky in abundance,
in reference to rain that comes often,
وجعلنا اﻻنهار تجري من تحتهم
And made the rivers flow under them.
as rain was abundant and the springs were plentiful, so that We deceived them.
فٲهلكناهم بذنوبهم
Yet We destroyed them for their sins,
meaning the mistakes and errors that they committed,
وأنشٲنا من بعدهم قرنا آخرين
and created after them other generations,
for, these generations of old perished and became as legends and stories,
وأنشٲنا من بعدهم قرنا آخرين
(And created after them other generations), so that We test the new generations, as well. Yet, they committed similar errors and were destroyed, as their ancestors were destroyed. Therefore, beware of the same end that might befall you, for you are not dearer to Allah than these previous nations, but the Messenger whom you defied is dearer to Allah than the Messengers they defied. Thus, you are more liable than them to receive torment, if it was not for Allah's mercy and kindness