ذَلِكَ أَن لَّمْ يَكُنْ رَّبُّكَ مُهْلِكَ الْقُرَى بِظُلْمٍ وَأَهْلُهَا غَـفِلُونَ

(This is because your Lord would not destroy the (populations of) towns for their wrongdoing while their people were unaware. ) meaning: `We sent the Messengers and revealed the Books to the Jinns and mankind, so that no one has an excuse that he is being punished for his wrongs although he did not receive Allah's Message. Therefore, We did not punish any of the nations, except after sending Messengers to them, so that they have no excuse.' Allah said in other Ayat,

وَإِن مِّنْ أُمَّةٍ إِلاَّ خَلاَ فِيهَا نَذِيرٌ

The sense of the fourth verse (132) is fairly clear. It says that with Allah there are ranks for classes of people among human beings and the Jinn. These ranks have been assigned in terms of their deeds. When rewarded or punished, the measure used shall be that of their deeds.