Research in quiddity and argument of the gradual escendof the Quran

Qur'anic scholars have discussed the  gradual descend of the Qur'an and listed many reasons for it;  Such as strengthening the heart of the Prophet (pbuh); step by step training of the new Islamic Ummah; Landing commensurate with the events and conditions of the descending period; better preservation and better understanding of the Quranic verses; ... . These reasons are different from the era of quantitative and qualitative aspects of the era. The principle of the gradual decline of the Qur'an is based on very clear and accepted reasons for Muslim scholars But almost all of these wisdom do not deserve the gradual decline of philosophy, due to their incorrect reasons. There are reasons and evidence to show that all verses and surahs of the Quran have been revealed after the events and conditions in the era of the Quran revelation  . According to these reasons, the gradual revelation of the Quran means the decline of its section after these events and conditions. Its philosophy is the gradual occurrence of these events and requirements.