And if only the people of the cities had believed and feared (7:96)

﴿وَلَوْ أَنَّ أَهْلَ الْقُرَىٰ آمَنُوا وَاتَّقَوْا لَفَتَحْنَا عَلَيْهِم بَرَكَاتٍ مِّنَ السَّمَاءِ وَالْأَرْضِ وَلَٰكِن كَذَّبُوا فَأَخَذْنَاهُم بِمَا كَانُوا يَكْسِبُونَ﴾
[ الأعراف: 96]

7:96 And if only the people of the cities had believed and feared Allah, We would have opened upon them blessings from the heaven and the earth; but they denied [the messengers], so We seized them for what they were earning."

If the people of the towns and cities which Allah sent His messengers to had believed in what their messengers brought them, and had been mindful of their Lord, leaving their disbelief and disobedience and following His commands, then Allah would have opened the doors of goodness upon them in every way; but they did not believe and were not mindful of Him.
Instead they rejected what their prophets came with.
So Allah overtook them with the punishment suddenly because of what they had earned through their sins and disobedience.

And if the people of the towns had believed and had the Taqwa (piety), certainly, We should have opened for them blessings from the heaven and the earth, but they belied (the Messengers). So We took them (with punishment) for what they used to earn (polytheism and crimes, etc.).

phonetic Transliteration

Walaw anna ahla alqura amanoo waittaqaw lafatahna AAalayhim barakatin mina alssamai waalardi walakin kaththaboo faakhathnahum bima kanoo yaksiboona

Abdullah Yusuf Ali - Translation

If the people of the towns had but believed and feared Allah, We should indeed have opened out to them (All kinds of) blessings from heaven and earth; but they rejected (the truth), and We brought them to book for their misdeeds.

Safi-ur-Rahman al-Mubarakpuri

And if the people of the towns had believed and had Taqwa, certainly, We should have opened for them blessings from the heaven and the earth, but they belied (the Messengers). So We took them (with punishment) for what they used to earn.

Page 163 English transliteration