The surah can be divided into the following two sections.
Section I (1-7)
An explanation of the fact that in cases of divorce it is not lawful to expel one's wife from the house by uttering the divorce sentence; it is necessary that the proper way pointed out by the Quran be adopted. People who, inspite of their financial difficulties, set out to observe the limits set by Allah with a view to please Him, shall receive His special help and assistance. Those who will not observe the limits set by Him because of their lust for wealth shall only wrong their own souls.
Section II (8-12)
Muslims have been warned that it is a historically proven reality that all those who had disobeyed Allah and His Prophets have always been severely punished by Him. He has done a great favour on the Muslims by sending towards them a Prophet who has led them to the light of guidance from the darkness of ignorance. If they honour this favour of the Almighty, He shall bless them with the eternal bliss of paradise---otherwise they should remember that to Him belongs the Kingdom of the heavens and the earth and He can certainly do what He intends.
(Translated from "Tadabbur-i-Quran") ----Shehzad Saleem