(This is the) Book (the Quran) sent down unto! you (O Muhammad SAW), so let not ...

... your breast be narrow therefrom, that you warn thereby, and a reminder unto the believers.
[Say (O Muhammad SAW) to these idolaters (pagan Arabs) of your folk:] Follow what has been sent down unto you from your Lord (the Quran and Prophet Muhammad's Sunnah), and follow not any Auliya' (protectors and helpers, etc. who order you to associate partners in worship with Allah), besides Him (Allah). Little do you remember!
And a great number of towns (their population) We destroyed (for their crimes). Our torment came upon them (suddenly) by night or while they were sleeping for their afternoon rest.
No cry did they utter when Our Torment came upon them but this: Verily, we were Zalimun (polytheists and wrong-doers, etc.).
Then surely, We shall question those (people) to whom it (the Book) was sent and verily, We shall question the Messengers.
Then surely, We shall narrate unto them (their whole story) with knowledge, and indeed We were not absent.
And the weighing on that day (Day of Resurrection) will be the true (weighing). So as for those whose scale (of good deeds) will be heavy, they will be the successful (by entering Paradise).
And as for those whose scale will be light, they are those who will lose their ownselves (by entering Hell) because they denied and rejected Our Ayat (proofs, evidences, verses, lessons, signs, revelations, etc.).
And surely, We gave you authority on the earth and appointed for you therein provisions (for your life). Little thanks do you give.
Al-Quran, Sura - Al Araf, Ayat - 2-10.