Relationship with the source of greatness, the secret of the security of revelation

Quran cannot be falsified by the power of tyrant persons and its light cannot be turned off. In fact, nothing cannot stand against this divine book as Quran states
إِنَّ الَّذِينَ كَفَرُوا بِالذِّكْرِ لَمَّا جَاءَهُمْ ۖ وَإِنَّهُ لَكِتَابٌ عَزِيزٌ
Those who reject the Message when it comes to them (are not hidden from Us). And indeed it is a Book of exalted power.
لَّا يَأْتِيهِ الْبَاطِلُ مِن بَيْنِ يَدَيْهِ وَلَا مِنْ خَلْفِهِ ۖ تَنزِيلٌ مِّنْ حَكِيمٍ حَمِيدٍ
No falsehood can approach it from before or behind it: It is sent down by One Full of Wisdom, Worthy of all Praise.
A person that does not succumb against force and threat will be a real devout as Quran states
قُولُونَ لَئِن رَّجَعْنَا إِلَى الْمَدِينَةِ لَيُخْرِجَنَّ الْأَعَزُّ مِنْهَا الْأَذَلَّ ۚ وَلِلَّهِ الْعِزَّةُ وَلِرَسُولِهِ وَلِلْمُؤْمِنِينَ وَلَٰكِنَّ الْمُنَافِقِينَ لَا يَعْلَمُونَ
They say, "If we return to Medina, surely the more honourable (element) will expel therefrom the meaner." But honour belongs to Allah and His Messenger, and to the Believers; but the Hypocrites know not.
Quran states the message of God
تَنزِيلُ الْكِتَابِ مِنَ اللَّهِ الْعَزِيزِ الْحَكِيمِ
The Revelation of the Book is from Allah the Exalted in Power, Full of Wisdom.
Quran states about polytheist that do not listen to Quran
وَقَالَ الَّذِينَ كَفَرُوا لَا تَسْمَعُوا لِهَٰذَا الْقُرْآنِ وَالْغَوْا فِيهِ لَعَلَّكُمْ تَغْلِبُونَ
The Unbelievers say: "Listen not to this Qur´an, but talk at random in the midst of its (reading), that ye may gain the upper hand.
Quran states about polytheist and hypocrites
وَهُمْ يَنْهَوْنَ عَنْهُ وَيَنْأَوْنَ عَنْهُ ۖ وَإِن يُهْلِكُونَ إِلَّا أَنفُسَهُمْ وَمَا يَشْعُرُونَ
Others they keep away from it, and themselves they keep away; but they only destroy their own souls, and they perceive it not.
Quran states about unbelievers that apply conspiracies for Islam
فَلَنُذِيقَنَّ الَّذِينَ كَفَرُوا عَذَابًا شَدِيدًا وَلَنَجْزِيَنَّهُمْ أَسْوَأَ الَّذِي كَانُوا يَعْمَلُونَ
But We will certainly give the Unbelievers a taste of a severe Penalty, and We will requite them for the worst of their deeds.
Quran states the torture of the hell
يَتَجَرَّعُهُ وَلَا يَكَادُ يُسِيغُهُ وَيَأْتِيهِ الْمَوْتُ مِن كُلِّ مَكَانٍ وَمَا هُوَ بِمَيِّتٍ ۖ وَمِن وَرَائِهِ عَذَابٌ غَلِيظٌ
In gulps will he sip it, but never will he be near swallowing it down his throat: death will come to him from every quarter, yet will he not die: and in front of him will be a chastisement unrelenting.
إِنَّ الَّذِينَ كَفَرُوا بِآيَاتِنَا سَوْفَ نُصْلِيهِمْ نَارًا كُلَّمَا نَضِجَتْ جُلُودُهُم بَدَّلْنَاهُمْ جُلُودًا غَيْرَهَا لِيَذُوقُوا الْعَذَابَ ۗ إِنَّ اللَّهَ كَانَ عَزِيزًا حَكِيمًا
Those who reject our Signs, We shall soon cast into the Fire: as often as their skins are roasted through, We shall change them for fresh skins, that they may taste the penalty: for Allah is Exalted in Power, Wise.
Quran states about the kinds of torturing
ذُقْ إِنَّكَ أَنتَ الْعَزِيزُ الْكَرِيمُ
Taste thou (this)! Truly wast thou mighty, full of honour
إِذَا أُلْقُوا فِيهَا سَمِعُوا لَهَا شَهِيقًا وَهِيَ تَفُورُ
When they are cast therein, they will hear the (terrible) drawing in of its breath even as it blazes forth.
وَلَوْ تَرَىٰ إِذِ الْمُجْرِمُونَ نَاكِسُو رُءُوسِهِمْ عِندَ رَبِّهِمْ رَبَّنَا أَبْصَرْنَا وَسَمِعْنَا فَارْجِعْنَا نَعْمَلْ صَالِحًا إِنَّا مُوقِنُونَ
If only thou couldst see when the guilty ones will bend low their heads before their Lord, (saying:) "Our Lord! We have seen and we have heard: Now then send us back (to the world): we will work righteousness: for we do indeed (now) believe.
أَسْكِنُوهُنَّ مِنْ حَيْثُ سَكَنتُم مِّن وُجْدِكُمْ وَلَا تُضَارُّوهُنَّ لِتُضَيِّقُوا عَلَيْهِنَّ ۚ وَإِن كُنَّ أُولَاتِ حَمْلٍ فَأَنفِقُوا عَلَيْهِنَّ حَتَّىٰ يَضَعْنَ حَمْلَهُنَّ ۚ فَإِنْ أَرْضَعْنَ لَكُمْ فَآتُوهُنَّ أُجُورَهُنَّ ۖ وَأْتَمِرُوا بَيْنَكُم بِمَعْرُوفٍ ۖ وَإِن تَعَاسَرْتُمْ فَسَتُرْضِعُ لَهُ أُخْرَىٰ
Let the women live (in ´iddat) in the same style as ye live, according to your means: Annoy them not, so as to restrict them. And if they carry (life in their wombs), then spend (your substance) on them until they deliver their burden: and if they suckle your (offspring), give them their recompense: and take mutual counsel together, according to what is just and reasonable. And if ye find yourselves in difficulties, let another woman suckle (the child) on the (father´s) behalf.

قَالَ رَبِّ لِمَ حَشَرْتَنِي أَعْمَىٰ وَقَدْ كُنتُ بَصِيرًا
He will say: "O my Lord! why hast Thou raised me up blind, while I had sight (before).
نَارُ اللَّهِ الْمُوقَدَةُ
.(It is) the Fire of (the Wrath of) Allah kindled (to a blaze)
الَّتِي تَطَّلِعُ عَلَى الْأَفْئِدَةِ
. The which doth mount (Right) to the Hearts
وَالَّذِينَ آمَنُوا وَعَمِلُوا الصَّالِحَاتِ لَنُكَفِّرَنَّ عَنْهُمْ سَيِّئَاتِهِمْ وَلَنَجْزِيَنَّهُمْ أَحْسَنَ الَّذِي كَانُوا يَعْمَلُونَ
Those who believe and work righteous deeds,- from them shall We blot out all evil (that may be) in them, and We shall reward them according to the best of their deeds.
Quran states about persons that want to turn off the light of God in different ways
يُرِيدُونَ لِيُطْفِئُوا نُورَ اللَّهِ بِأَفْوَاهِهِمْ وَاللَّهُ مُتِمُّ نُورِهِ وَلَوْ كَرِهَ الْكَافِرُونَ
Their intention is to extinguish Allah´s Light (by blowing) with their mouths: But Allah will complete (the revelation of) His Light, even though the Unbelievers may detest (it).
Quran states that God extinguished the fire of war of enemies
وَقَالَتِ الْيَهُودُ يَدُ اللَّهِ مَغْلُولَةٌ ۚ غُلَّتْ أَيْدِيهِمْ وَلُعِنُوا بِمَا قَالُوا ۘ بَلْ يَدَاهُ مَبْسُوطَتَانِ يُنفِقُ كَيْفَ يَشَاءُ ۚ وَلَيَزِيدَنَّ كَثِيرًا مِّنْهُم مَّا أُنزِلَ إِلَيْكَ مِن رَّبِّكَ طُغْيَانًا وَكُفْرًا ۚ وَأَلْقَيْنَا بَيْنَهُمُ الْعَدَاوَةَ وَالْبَغْضَاءَ إِلَىٰ يَوْمِ الْقِيَامَةِ ۚ كُلَّمَا أَوْقَدُوا نَارًا لِّلْحَرْبِ أَطْفَأَهَا اللَّهُ ۚ وَيَسْعَوْنَ فِي الْأَرْضِ فَسَادًا ۚ وَاللَّهُ لَا يُحِبُّ الْمُفْسِدِينَ
The Jews say: "Allah´s hand is tied up." Be their hands tied up and be they accursed for the (blasphemy) they utter. Nay, both His hands are widely outstretched: He giveth and spendeth (of His bounty) as He pleaseth. But the revelation that cometh to thee from Allah increaseth in most of them their obstinate rebellion and blasphemy. Amongst them we have placed enmity and hatred till the Day of Judgment. Every time they kindle the fire of war, Allah doth extinguish it; but they (ever) strive to do mischief on earth. And Allah loveth not those who do mischief.
Quran states about persons that want to prevent from divine messages through their mouth
ذَٰلِكَ جَزَاءُ أَعْدَاءِ اللَّهِ النَّارُ ۖ لَهُمْ فِيهَا دَارُ الْخُلْدِ ۖ جَزَاءً بِمَا كَانُوا بِآيَاتِنَا يَجْحَدُونَ
Such is the requital of the enemies of Allah,- the Fire: therein will be for them the Eternal Home: a (fit) requital, for that they were wont to reject Our Signs.
Quran states about divine messages
إِنَّا نَحْنُ نَزَّلْنَا الذِّكْرَ وَإِنَّا لَهُ لَحَافِظُونَ
We have, without doubt, sent down the Message; and We will assuredly guard it (from corruption.
Quran states about persons that stand against divine messages
إِذْ أَنتُم بِالْعُدْوَةِ الدُّنْيَا وَهُم بِالْعُدْوَةِ الْقُصْوَىٰ وَالرَّكْبُ أَسْفَلَ مِنكُمْ ۚ وَلَوْ تَوَاعَدتُّمْ لَاخْتَلَفْتُمْ فِي الْمِيعَادِ ۙ وَلَٰكِن لِّيَقْضِيَ اللَّهُ أَمْرًا كَانَ مَفْعُولًا لِّيَهْلِكَ مَنْ هَلَكَ عَن بَيِّنَةٍ وَيَحْيَىٰ مَنْ حَيَّ عَن بَيِّنَةٍ ۗ وَإِنَّ اللَّهَ لَسَمِيعٌ عَلِيمٌ
Remember ye were on the hither side of the valley, and they on the farther side, and the caravan on lower ground than ye. Even if ye had made a mutual appointment to meet, ye would certainly have failed in the appointment: But (thus ye met), that Allah might accomplish a matter already enacted; that those who died might die after a clear Sign (had been given), and those who lived might live after a Clear Sign (had been given). And verily Allah is He Who heareth and knoweth (all things).
Quran states about persons that stand against Quran
ذَٰلِكَ جَزَاءُ أَعْدَاءِ اللَّهِ النَّارُ ۖ لَهُمْ فِيهَا دَارُ الْخُلْدِ ۖ جَزَاءً بِمَا كَانُوا بِآيَاتِنَا يَجْحَدُونَ
Such is the requital of the enemies of Allah,- the Fire: therein will be for them the Eternal Home: a (fit) requital, for that they were wont to reject Our Signs.
Quran states that believers have no fear and grief
أَلَا إِنَّ أَوْلِيَاءَ اللَّهِ لَا خَوْفٌ عَلَيْهِمْ وَلَا هُمْ يَحْزَنُونَ
Behold! verily on the friends of Allah there is no fear, nor shall they grieve.
Quran states that unbelievers have fear and grief
فِي قُلُوبِهِم مَّرَضٌ فَزَادَهُمُ اللَّهُ مَرَضًا ۖ وَلَهُمْ عَذَابٌ أَلِيمٌ بِمَا كَانُوا يَكْذِبُونَ
In their hearts is a disease; and Allah has increased their disease: And grievous is the penalty they (incur), because they are false (to themselves).
Quran states that unbelievers do not get rid of fear and grief
لشَّيْطَانُ يَعِدُكُمُ الْفَقْرَ وَيَأْمُرُكُم بِالْفَحْشَاءِ ۖ وَاللَّهُ يَعِدُكُم مَّغْفِرَةً مِّنْهُ وَفَضْلًا ۗ وَاللَّهُ وَاسِعٌ عَلِيمٌ
The Evil one threatens you with poverty and bids you to conduct unseemly. Allah promiseth you His forgiveness and bounties. And Allah careth for all and He knoweth all things.

وَمَنْ أَعْرَضَ عَن ذِكْرِي فَإِنَّ لَهُ مَعِيشَةً ضَنكًا وَنَحْشُرُهُ يَوْمَ الْقِيَامَةِ أَعْمَىٰ
"But whosoever turns away from My Message, verily for him is a life narrowed down, and We shall raise him up blind on the Day of Judgment.
Quran states believers that trust in God
وَيَرْزُقْهُ مِنْ حَيْثُ لَا يَحْتَسِبُ ۚ وَمَن يَتَوَكَّلْ عَلَى اللَّهِ فَهُوَ حَسْبُهُ ۚ إِنَّ اللَّهَ بَالِغُ أَمْرِهِ ۚ قَدْ جَعَلَ اللَّهُ لِكُلِّ شَيْءٍ قَدْرًا
And He provides for him from (sources) he never could imagine. And if any one puts his trust in Allah, sufficient is (Allah) for him. For Allah will surely accomplish his purpose: verily, for all things has Allah appointed a due proportion.
Quran states
يَا أَيُّهَا النَّاسُ قَدْ جَاءَتْكُم مَّوْعِظَةٌ مِّن رَّبِّكُمْ وَشِفَاءٌ لِّمَا فِي الصُّدُورِ وَهُدًى وَرَحْمَةٌ لِّلْمُؤْمِنِينَ
O mankind! there hath come to you a direction from your Lord and a healing for the (diseases) in your hearts,- and for those who believe, a guidance and a Mercy.
قُل لَّن يُصِيبَنَا إِلَّا مَا كَتَبَ اللَّهُ لَنَا هُوَ مَوْلَانَا ۚ وَعَلَى اللَّهِ فَلْيَتَوَكَّلِ الْمُؤْمِنُونَ
Say: "Nothing will happen to us except what Allah has decreed for us: He is our protector": and on Allah let the Believers put their trust.
إِلَّا مَنْ أَتَى اللَّهَ بِقَلْبٍ سَلِيمٍ
But only he (will prosper) that brings to Allah a sound heart.
وَمَا مِن دَابَّةٍ فِي الْأَرْضِ إِلَّا عَلَى اللَّهِ رِزْقُهَا وَيَعْلَمُ مُسْتَقَرَّهَا وَمُسْتَوْدَعَهَا ۚ كُلٌّ فِي كِتَابٍ مُّبِينٍ
There is no moving creature on earth but its sustenance dependeth on Allah: He knoweth the time and place of its definite abode and its temporary deposit: All is in a clear Record.
وَتُحِبُّونَ الْمَالَ حُبًّا جَمًّا
.And ye love wealth with inordinate love
وَقَالُوا قُلُوبُنَا فِي أَكِنَّةٍ مِّمَّا تَدْعُونَا إِلَيْهِ وَفِي آذَانِنَا وَقْرٌ وَمِن بَيْنِنَا وَبَيْنِكَ حِجَابٌ فَاعْمَلْ إِنَّنَا عَامِلُونَ
They say: "Our hearts are under veils, (concealed) from that to which thou dost invite us, and in our ears in a deafness, and between us and thee is a screen: so do thou (what thou wilt); for us, we shall do (what we will).
وَإِذَا تُتْلَىٰ عَلَيْهِمْ آيَاتُنَا بَيِّنَاتٍ ۙ قَالَ الَّذِينَ لَا يَرْجُونَ لِقَاءَنَا ائْتِ بِقُرْآنٍ غَيْرِ هَٰذَا أَوْ بَدِّلْهُ ۚ قُلْ مَا يَكُونُ لِي أَنْ أُبَدِّلَهُ مِن تِلْقَاءِ نَفْسِي ۖ إِنْ أَتَّبِعُ إِلَّا مَا يُوحَىٰ إِلَيَّ ۖ إِنِّي أَخَافُ إِنْ عَصَيْتُ رَبِّي عَذَابَ يَوْمٍ عَظِيمٍ
But when Our Clear Signs are rehearsed unto them, those who rest not their hope on their meeting with Us, Say: "Bring us a reading other than this, or change this," Say: "It is not for me, of my own accord, to change it: I follow naught but what is revealed unto me: if I were to disobey my Lord, I should myself fear the penalty of a Great Day (to come).
A devout person has achieved certainty and luminousness in scientific matters as Quran states
الرَّحْمَٰنُ
.(Allah) Most Gracious
عَلَّمَ الْقُرْآنَ
It is He Who has taught the Qur´an.
خَلَقَ الْإِنسَانَ
He has created man
عَلَّمَهُ الْبَيَانَ
.( He has taught him speech (and intelligence