Like in the bible it has a chronical order that it follows, beginning to the end.
But in the quran its written from longest to shortest chapters, and is not in the right order. Just wondering why it is written like that, i just imagine it must be confusing to backtrack on beginning til the end.
Peace be on you.
1- The Holy Quran was not collected in the sequence as it was descended in.
2- The chapters of Holy Quran are not placed according to their length.
3- The collection were not work of any human, or Holy Prophet (peace and blessing of Allah be on him). It was purely by the guidance of Allah:
“Surely upon Us (rests) its collection and recital / spread.” [chapter 75 : v 19]
4- All chapters are connected in their subjects.
5- For a perfect Divine Book of complete wisdom, which has to teach creed and virtues for all times, it is essential that its initial part according to the descend of revelation should not be same as initial part according to final compilation. The reason is that when such Divine Book starts to address people, they are fully ignorant about its message but after passage of time, they begin to know the message up to some degree. That is why, the order of revelation of Holy Quran is different than the order of final compiled shape.
6- After getting the Quranic revelations, under Divine guidance, Holy Prophet (peace and blessing of Allah be on him) would ask the assigned-writers of revelation to put certain verses at certain place.
7- The verses, which were descended first of all, were of chapter 96, (verses 2-6):
“Convey thou in the name of thy Lord Who created,
Created human from love, [i.e., love is present in human base; The word ‘alaq’ has meanings: love, hate, suspended from, a clot of blood]
Convey and thy Lord is Most Generous,
Who taught (human) by the pen,
Taught human what he knew not.”
COMMENTARY
These verses are commands to start conveying the message. It is said that, to convey Divine message to others is the right of Lord which human must pay because Lord has created him, and has put His love and hate for Satan in him. Allah has bestowed progressive powers to human therefore, He taught him learning and writing so that he can distribute and save his knowledge for the world.
The subject of conveying the message to humanity is also present in the chapters which were descended in early time of Prophet-hood of Holy Prophet (s.a.w.).
Thus it appears in chapter 74, verse 2-4:
“O thou who has wrapped (thyself with thy mantle),
Arise and warn,
And thy Lord do magnify.”
And similarly, chapter 73, verses 2-6 said:
“O thou who art bearing a (heavy responsibility),
Stand up in (Prayer) at night except a small portion thereof,
Half of it, or make it a little less than that,
Or make it a little more than that and recite the Quran slowly and thoughtfully,
Verily We are charging thee with weighty word.”
All these three examples of early time revelations; they are stating attributes of Allah the Exalted, purpose of creation of human, need of worship, evil in the world. These verses were also preparing Holy Prophet (peace and blessing of Allah be on him) to ignite a fire of love and enthusiasm in his heart for conveying Allah’s message to the people.
Thus in the initial time, such introductory revelation was needed.
On secondary level, more knowledge was given. It was about attributes of Allah, need for Prophet-hood, righteousness and purity, need of prayer, destiny and decision, life after death.
These matters were briefly disclosed in the early times of revelation so that world should know the differentiating matters between Islam and other religions.
8- After the Holy Quran was fully revealed, Muslims increased in numbers, and by virtue of living together, their non-Muslim friends and society understood about Islamic subjects up to some extent. The next generations of Muslims had also learned basic faith from their elders.
9- This was the time when a new order of Quranic revelation was needed which was to fullfil the needs of rest of the times to come till Hereafter. Now it was not needed to tell in the start of Holy Quran that, O Prophet, your people have gone astray, stand up and convey message of your Lord. Now the first addressed people of the Holy Quran were those who believed it and had seen Islam had successfully worked. Thus it was necessary to start the Holy Quran with the subject of the purpose of Holy Quran and the responsibilities of Muslim. In that time non-Muslims philosophers are told about the need of Islam in the presence of previous religions who would do comparative studies and discuss how the prophecies in previous scriptures fulfilled about the coming of Holy Prophet (s.a.w.)……
After the completion of revelation, believers' and non believers' approach to the Book become different than the time of start of revelation. A perfect Divine Book takes care both scenarios. Holy Quran is unique among all revealed Books which addressed this need. It is not a matter of objection but it is a superiority of Holy Quran.
Good wishes.
[Reference: Tafsir Kabir, Vol 1,(Commentary of Holy Quran ) by Second Ahmadiyya Khalifah (may Allah be pleased with him), alislam.org]