Revelation as tradition of God

In spite of the fact that Quran is divine revelation and has special order, there is specific relationship among some Surahs. For example, Surahs that start with '' Ha Mim'' share same content. These Surahs are about revelation, revelation descending, revelation receiving and content of revelation.
The prophet (peace of Allah be upon him and his descendants) states
إنّ الله انزل القرآن علیَّ بكلام العرب و المتعارف فی لغتها
'' God has descended me Quran according to rules of Arabic Language and rhetorical ways''.
Hence, it should be said that language of revelation or language of Quran is easy and without complexity. Of course, anyone uses Quran according to his or her talent. Quran states
أَنزَلَ مِنَ السَّمَاءِ مَاءً فَسَالَتْ أَوْدِيَةٌ بِقَدَرِهَا فَاحْتَمَلَ السَّيْلُ زَبَدًا رَّابِيًا ۚ وَمِمَّا يُوقِدُونَ عَلَيْهِ فِي النَّارِ ابْتِغَاءَ حِلْيَةٍ أَوْ مَتَاعٍ زَبَدٌ مِّثْلُهُ ۚ كَذَٰلِكَ يَضْرِبُ اللَّهُ الْحَقَّ وَالْبَاطِلَ ۚ فَأَمَّا الزَّبَدُ فَيَذْهَبُ جُفَاءً ۖ وَأَمَّا مَا يَنفَعُ النَّاسَ فَيَمْكُثُ فِي الْأَرْضِ ۚ كَذَٰلِكَ يَضْرِبُ اللَّهُ الْأَمْثَالَ
He sends down water from the skies, and the channels flow, each according to its measure: But the torrent bears away to foam that mounts up to the surface. Even so, from that (ore) which they heat in the fire, to make ornaments or utensils therewith, there is a scum likewise. Thus doth Allah (by parables) show forth Truth and Vanity. For the scum disappears like forth cast out; while that which is for the good of mankind remains on the earth. Thus doth Allah set forth parables.
اللَّهُ الَّذِي رَفَعَ السَّمَاوَاتِ بِغَيْرِ عَمَدٍ تَرَوْنَهَا ۖ ثُمَّ اسْتَوَىٰ عَلَى الْعَرْشِ ۖ وَسَخَّرَ الشَّمْسَ وَالْقَمَرَ ۖ كُلٌّ يَجْرِي لِأَجَلٍ مُّسَمًّى ۚ يُدَبِّرُ الْأَمْرَ يُفَصِّلُ الْآيَاتِ لَعَلَّكُم بِلِقَاءِ رَبِّكُمْ تُوقِنُونَ
Allah is He Who raised the heavens without any pillars that ye can see; is firmly established on the throne (of authority); He has subjected the sun and the moon (to his Law)! Each one runs (its course) for a term appointed. He doth regulate all affairs, explaining the signs in detail, that ye may believe with certainty in the meeting with your Lord.
وَفِي الْأَرْضِ قِطَعٌ مُّتَجَاوِرَاتٌ وَجَنَّاتٌ مِّنْ أَعْنَابٍ وَزَرْعٌ وَنَخِيلٌ صِنْوَانٌ وَغَيْرُ صِنْوَانٍ يُسْقَىٰ بِمَاءٍ وَاحِدٍ وَنُفَضِّلُ بَعْضَهَا عَلَىٰ بَعْضٍ فِي الْأُكُلِ ۚ إِنَّ فِي ذَٰلِكَ لَآيَاتٍ لِّقَوْمٍ يَعْقِلُونَ
And in the earth are tracts (diverse though) neighbouring, and gardens of vines and fields sown with corn, and palm trees - growing out of single roots or otherwise: watered with the same water, yet some of them We make more excellent than others to eat. Behold, verily in these things there are signs for those who understand.
لَهُ مُعَقِّبَاتٌ مِّن بَيْنِ يَدَيْهِ وَمِنْ خَلْفِهِ يَحْفَظُونَهُ مِنْ أَمْرِ اللَّهِ ۗ إِنَّ اللَّهَ لَا يُغَيِّرُ مَا بِقَوْمٍ حَتَّىٰ يُغَيِّرُوا مَا بِأَنفُسِهِمْ ۗ وَإِذَا أَرَادَ اللَّهُ بِقَوْمٍ سُوءًا فَلَا مَرَدَّ لَهُ ۚ وَمَا لَهُم مِّن دُونِهِ مِن وَالٍ
For each (such person) there are (angels) in succession, before and behind him: They guard him by command of Allah. Allah does not change a people´s lot unless they change what is in their hearts. But when (once) Allah willeth a people´s punishment, there can be no turning it back, nor will they find, besides Him, any to protect.
قُلْ مَن رَّبُّ السَّمَاوَاتِ وَالْأَرْضِ قُلِ اللَّهُ ۚ قُلْ أَفَاتَّخَذْتُم مِّن دُونِهِ أَوْلِيَاءَ لَا يَمْلِكُونَ لِأَنفُسِهِمْ نَفْعًا وَلَا ضَرًّا ۚ قُلْ هَلْ يَسْتَوِي الْأَعْمَىٰ وَالْبَصِيرُ أَمْ هَلْ تَسْتَوِي الظُّلُمَاتُ وَالنُّورُ ۗ أَمْ جَعَلُوا لِلَّهِ شُرَكَاءَ خَلَقُوا كَخَلْقِهِ فَتَشَابَهَ الْخَلْقُ عَلَيْهِمْ ۚ قُلِ اللَّهُ خَالِقُ كُلِّ شَيْءٍ وَهُوَ الْوَاحِدُ الْقَهَّارُ
Say: "Who is the Lord and Sustainer of the heavens and the earth?" Say: "(It is) Allah." Say: "Do ye then take (for worship) protectors other than Him, such as have no power either for good or for harm to themselves?" Say: "Are the blind equal with those who see? Or the depths of darkness equal with light?" Or do they assign to Allah partners who have created (anything) as He has created, so that the creation seemed to them similar? Say: "Allah is the Creator of all things: He is the One, the Supreme and Irresistible.
وَلَوْ أَنَّ قُرْآنًا سُيِّرَتْ بِهِ الْجِبَالُ أَوْ قُطِّعَتْ بِهِ الْأَرْضُ أَوْ كُلِّمَ بِهِ الْمَوْتَىٰ ۗ بَل لِّلَّهِ الْأَمْرُ جَمِيعًا ۗ أَفَلَمْ يَيْأَسِ الَّذِينَ آمَنُوا أَن لَّوْ يَشَاءُ اللَّهُ لَهَدَى النَّاسَ جَمِيعًا ۗ وَلَا يَزَالُ الَّذِينَ كَفَرُوا تُصِيبُهُم بِمَا صَنَعُوا قَارِعَةٌ أَوْ تَحُلُّ قَرِيبًا مِّن دَارِهِمْ حَتَّىٰ يَأْتِيَ وَعْدُ اللَّهِ ۚ إِنَّ اللَّهَ لَا يُخْلِفُ الْمِيعَادَ
If there were a Qur´an with which mountains were moved, or the earth were cloven asunder, or the dead were made to speak, (this would be the one!) But, truly, the command is with Allah in all things! Do not the Believers know, that, had Allah (so) willed, He could have guided all mankind (to the right)? But the Unbelievers,- never will disaster cease to seize them for their (ill) deeds, or to settle close to their homes, until the promise of Allah come to pass, for, verily, Allah will not fail in His promise.
أَفَمَنْ هُوَ قَائِمٌ عَلَىٰ كُلِّ نَفْسٍ بِمَا كَسَبَتْ ۗ وَجَعَلُوا لِلَّهِ شُرَكَاءَ قُلْ سَمُّوهُمْ ۚ أَمْ تُنَبِّئُونَهُ بِمَا لَا يَعْلَمُ فِي الْأَرْضِ أَم بِظَاهِرٍ مِّنَ الْقَوْلِ ۗ بَلْ زُيِّنَ لِلَّذِينَ كَفَرُوا مَكْرُهُمْ وَصُدُّوا عَنِ السَّبِيلِ ۗ وَمَن يُضْلِلِ اللَّهُ فَمَا لَهُ مِنْ هَادٍ
Is then He who standeth over every soul (and knoweth) all that it doth, (like any others)? And yet they ascribe partners to Allah. Say: "But name them! is it that ye will inform Him of something he knoweth not on earth, or is it (just) a show of words?" Nay! to those who believe not, their pretence seems pleasing, but they are kept back (thereby) from the path. And those whom Allah leaves to stray, no one can guide.
Quran has external and internal meanings. Its external meaning is clear for all of persons and its internal meaning needs thinking and pondering.
Verses of Quran recommends persons to thinking and pondering;
أَفَلَا يَتَدَبَّرُونَ الْقُرْآنَ أَمْ عَلَىٰ قُلُوبٍ أَقْفَالُهَا
Do they not then earnestly seek to understand the Qur´an, or are their hearts locked up by them?
فَإِذَا لَقِيتُمُ الَّذِينَ كَفَرُوا فَضَرْبَ الرِّقَابِ حَتَّىٰ إِذَا أَثْخَنتُمُوهُمْ فَشُدُّوا الْوَثَاقَ فَإِمَّا مَنًّا بَعْدُ وَإِمَّا فِدَاءً حَتَّىٰ تَضَعَ الْحَرْبُ أَوْزَارَهَا ۚ ذَٰلِكَ وَلَوْ يَشَاءُ اللَّهُ لَانتَصَرَ مِنْهُمْ وَلَٰكِن لِّيَبْلُوَ بَعْضَكُم بِبَعْضٍ ۗ وَالَّذِينَ قُتِلُوا فِي سَبِيلِ اللَّهِ فَلَن يُضِلَّ أَعْمَالَهُمْ
Therefore, when ye meet the Unbelievers (in fight), smite at their necks; At length, when ye have thoroughly subdued them, bind a bond firmly (on them): thereafter (is the time for) either generosity or ransom: Until the war lays down its burdens. Thus (are ye commanded): but if it had been Allah´s Will, He could certainly have exacted retribution from them (Himself); but (He lets you fight) in order to test you, some with others. But those who are slain in the Way of Allah,- He will never let their deeds be lost.
مَّثَلُ الْجَنَّةِ الَّتِي وُعِدَ الْمُتَّقُونَ ۖ فِيهَا أَنْهَارٌ مِّن مَّاءٍ غَيْرِ آسِنٍ وَأَنْهَارٌ مِّن لَّبَنٍ لَّمْ يَتَغَيَّرْ طَعْمُهُ وَأَنْهَارٌ مِّنْ خَمْرٍ لَّذَّةٍ لِّلشَّارِبِينَ وَأَنْهَارٌ مِّنْ عَسَلٍ مُّصَفًّى ۖ وَلَهُمْ فِيهَا مِن كُلِّ الثَّمَرَاتِ وَمَغْفِرَةٌ مِّن رَّبِّهِمْ ۖ كَمَنْ هُوَ خَالِدٌ فِي النَّارِ وَسُقُوا مَاءً حَمِيمًا فَقَطَّعَ أَمْعَاءَهُم
(Here is) a Parable of the Garden which the righteous are promised: in it are rivers of water incorruptible; rivers of milk of which the taste never changes; rivers of wine, a joy to those who drink; and rivers of honey pure and clear. In it there are for them all kinds of fruits; and Grace from their Lord. (Can those in such Bliss) be compared to such as shall dwell for ever in the Fire, and be given, to drink, boiling water, so that it cuts up their bowels (to pieces).
وَيَقُولُ الَّذِينَ آمَنُوا لَوْلَا نُزِّلَتْ سُورَةٌ ۖ فَإِذَا أُنزِلَتْ سُورَةٌ مُّحْكَمَةٌ وَذُكِرَ فِيهَا الْقِتَالُ ۙ رَأَيْتَ الَّذِينَ فِي قُلُوبِهِم مَّرَضٌ يَنظُرُونَ إِلَيْكَ نَظَرَ الْمَغْشِيِّ عَلَيْهِ مِنَ الْمَوْتِ ۖ فَأَوْلَىٰ لَهُمْ
Those who believe say, "Why is not a sura sent down (for us)?" But when a sura of basic or categorical meaning is revealed, and fighting is mentioned therein, thou wilt see those in whose hearts is a disease looking at thee with a look of one in swoon at the approach of death. But more fitting for them.
هَا أَنتُمْ هَٰؤُلَاءِ تُدْعَوْنَ لِتُنفِقُوا فِي سَبِيلِ اللَّهِ فَمِنكُم مَّن يَبْخَلُ ۖ وَمَن يَبْخَلْ فَإِنَّمَا يَبْخَلُ عَن نَّفْسِهِ ۚ وَاللَّهُ الْغَنِيُّ وَأَنتُمُ الْفُقَرَاءُ ۚ وَإِن تَتَوَلَّوْا يَسْتَبْدِلْ قَوْمًا غَيْرَكُمْ ثُمَّ لَا يَكُونُوا أَمْثَالَكُم
Behold, ye are those invited to spend (of your substance) in the Way of Allah: But among you are some that are niggardly. But any who are niggardly are so at the expense of their own souls. But Allah is free of all wants, and it is ye that are needy. If ye turn back (from the Path), He will substitute in your stead another people; then they would not be like you.
It is not impossible for persons to understand hidden and clear realities of Quran and it depends of tools of understanding and means of achieving it.
يَا أَيُّهَا النَّاسُ اعْبُدُوا رَبَّكُمُ الَّذِي خَلَقَكُمْ وَالَّذِينَ مِن قَبْلِكُمْ لَعَلَّكُمْ تَتَّقُونَ
O ye people! Adore your Guardian-Lord, who created you and those who came before you, that ye may have the chance to learn righteousness.
الَّذِينَ يَأْكُلُونَ الرِّبَا لَا يَقُومُونَ إِلَّا كَمَا يَقُومُ الَّذِي يَتَخَبَّطُهُ الشَّيْطَانُ مِنَ الْمَسِّ ۚ ذَٰلِكَ بِأَنَّهُمْ قَالُوا إِنَّمَا الْبَيْعُ مِثْلُ الرِّبَا ۗ وَأَحَلَّ اللَّهُ الْبَيْعَ وَحَرَّمَ الرِّبَا ۚ فَمَن جَاءَهُ مَوْعِظَةٌ مِّن رَّبِّهِ فَانتَهَىٰ فَلَهُ مَا سَلَفَ وَأَمْرُهُ إِلَى اللَّهِ ۖ وَمَنْ عَادَ فَأُولَٰئِكَ أَصْحَابُ النَّارِ ۖ هُمْ فِيهَا خَالِدُونَ
Those who devour usury will not stand except as stand one whom the Evil one by his touch Hath driven to madness. That is because they say: "Trade is like usury," but Allah hath permitted trade and forbidden usury. Those who after receiving direction from their Lord, desist, shall be pardoned for the past; their case is for Allah (to judge); but those who repeat (The offence) are companions of the Fire: They will abide therein (for ever).
يَسْأَلُكَ أَهْلُ الْكِتَابِ أَن تُنَزِّلَ عَلَيْهِمْ كِتَابًا مِّنَ السَّمَاءِ ۚ فَقَدْ سَأَلُوا مُوسَىٰ أَكْبَرَ مِن ذَٰلِكَ فَقَالُوا أَرِنَا اللَّهَ جَهْرَةً فَأَخَذَتْهُمُ الصَّاعِقَةُ بِظُلْمِهِمْ ۚ ثُمَّ اتَّخَذُوا الْعِجْلَ مِن بَعْدِ مَا جَاءَتْهُمُ الْبَيِّنَاتُ فَعَفَوْنَا عَن ذَٰلِكَ ۚ وَآتَيْنَا مُوسَىٰ سُلْطَانًا مُّبِينًا
The people of the Book ask thee to cause a book to descend to them from heaven: Indeed they asked Moses for an even greater (miracle), for they said: "Show us Allah in public," but they were dazed for their presumption, with thunder and lightning. Yet they worshipped the calf even after clear signs had come to them; even so we forgave them; and gave Moses manifest proofs of authority.
وَابْتَلُوا الْيَتَامَىٰ حَتَّىٰ إِذَا بَلَغُوا النِّكَاحَ فَإِنْ آنَسْتُم مِّنْهُمْ رُشْدًا فَادْفَعُوا إِلَيْهِمْ أَمْوَالَهُمْ ۖ وَلَا تَأْكُلُوهَا إِسْرَافًا وَبِدَارًا أَن يَكْبَرُوا ۚ وَمَن كَانَ غَنِيًّا فَلْيَسْتَعْفِفْ ۖ وَمَن كَانَ فَقِيرًا فَلْيَأْكُلْ بِالْمَعْرُوفِ ۚ فَإِذَا دَفَعْتُمْ إِلَيْهِمْ أَمْوَالَهُمْ فَأَشْهِدُوا عَلَيْهِمْ ۚ وَكَفَىٰ بِاللَّهِ حَسِيبًا
Make trial of orphans until they reach the age of marriage; if then ye find sound judgment in them, release their property to them; but consume it not wastefully, nor in haste against their growing up. If the guardian is well-off, Let him claim no remuneration, but if he is poor, let him have for himself what is just and reasonable. When ye release their property to them, take witnesses in their presence: But all-sufficient is Allah in taking account.
Quran states
لَهُ مَقَالِيدُ السَّمَاوَاتِ وَالْأَرْضِ ۖ يَبْسُطُ الرِّزْقَ لِمَن يَشَاءُ وَيَقْدِرُ ۚ إِنَّهُ بِكُلِّ شَيْءٍ عَلِيمٌ
To Him belong the keys of the heavens and the earth: He enlarges and restricts. The Sustenance to whom He will: for He knows full well all things.
اللَّهُ لَطِيفٌ بِعِبَادِهِ يَرْزُقُ مَن يَشَاءُ ۖ وَهُوَ الْقَوِيُّ الْعَزِيزُ
Gracious is Allah to His servants: He gives Sustenance to whom He pleases: and He has power and can carry out His Will.