" One of Allah’s ways of treatment is that...
" One of Allah’s ways of treatment is that, by sending prophets and different kinds of warning, He shows right and wrong to people and states the facts for them to complete the argument. It is in that case that if they behave heedlessly, He will punish them. This general law and way of treatment is referred to in numerous verses of the Qur'an, including: Surah-Ash-Shu'ara, No.26. Verse 208 which says: "And We did not destroy any town but it had (its) warners:" , and Surah Al-Isra, No.17.
Verse 15 ; where it says: "... nor do We chastise until We raise an apostle." Therefore Allah’s chastisements are given because of justice that exists in the Essence of His Lordship.
"And for all (men) there are ranks in accordance with what they have done, and your Lord is not heedless of what they do." Allah is just and He gives everyone the rank due to the deeds the one has performed. Thus, both the felicity and evil fortune of people depend on their own deeds and conduct.
"And your Lord Self-Sufficient, the Lord of Mercy, if He pleases, He may take you off; and make whom He pleases successors after you, just as He produced you from the descendants of other people." 134. "Verily what you are promised, will certainly come, and you cannot make (Allah) helpless (to flee from His retribution)." In the previous verses the statement was about rewards justly and without atrocity given to the eligible persons.
Here, in this verse, the Qur'an refers to the Mercy and Self -Sufficiency of Allah*,* both of which are reasons to His Justice. The verse says: "And your Lord is Self-Sufficient, the Lord of Mercy....." That is, your Lord is not in need of His servants and their worships. He is the owner of clemency. He bestows mercy upon people.