ظَهَرَ الْفَسَادُ فِي الْبَرِّ وَالْبَحْرِ بِمَا كَسَبَتْ أَيْدِي النَّاسِ لِيُذِيقَهُم بَعْضَ الَّذِي عَمِلُوا لَعَلَّهُمْ يَرْجِعُونَ (41)
(30:41) Evil has become rife on the land and at sea because of men's deeds; this in order that He may cause them to have a taste of some of their deeds; perhaps they will turn back (from evil). *64
*64) This is again an allusion to the war that was going on between Byzantium and Iran, which was telling on the whole of the Middle East. "Man's own doings" means the wickedness and oppression and tyranny, which inevitably appear in human conduct and character as a result of adopting shirk and atheism and ignoring the Hereafter. "Maybe they mend their ways" means that Allah shows the evil consequences of some of the acts of men in this world before the punishment of the Hereafter so that they understand the reality, feel the error of their conjectures and turn to the righteous belief, which the Prophets of Allah have been presenting before man since the earliest times, and besides adopting which there is no other way of ordering human conduct on sound foundations. This subject has been presented at several places in the Qur'an, e.g. in At-Taubah: 126, Ar-Ra'd: 31, As-Sajdah: 21, Al-Tur: 47.