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There are various subjects discussed in many surahs (chapters) of Quran which they look, at first glance, unrelated.
It is essential, therefore, to clear the wrong conception of confusing speech from the court - yard of divine revelation.
If each surah does not pertain to a certain unique message and its subjects do not intended for an ultimate goal. What is the reason for grouping a set of verses in a surah by the order of Allah and prophet?
That is why we think the proof of unity in such a plurality is necessary step towards showing the readers of Quran that they are faced with a harmonious and well organized complex.
In the present article we intend to convey an harmonious and well - ordinated feature from every Quranic surah by offering some measures specific for discovering aims ruling over all surahs. These measures are:
1- Omission of subordinate sentences.
2- Analysis of place and time conditions regarding to surahs.
3- Beginning surahs.
4- Repetition of specific themes and subjects.
5- Beginning and final verses in surahs.
6- Frequency of word repetition in surah.