Key Verses

1. 3:173Aali Imran
   ٱلَّذِينَ قَالَ لَهُمُ ٱلنَّاسُ إِنَّ ٱلنَّاسَ قَدۡ جَمَعُواْ لَكُمۡ فَٱخۡشَوۡهُمۡ فَزَادَهُمۡ إِيمَٰنٗا وَقَالُواْ حَسۡبُنَا ٱللَّهُ وَنِعۡمَ ٱلۡوَكِيلُ
   Those unto whom men said: Lo! the people have gathered against you, therefor fear them. (The threat of danger) but increased the faith of them and they cried: Allah is Sufficient for us! Most Excellent is He in Whom we trust!
   In context

   Some of the idolaters said to them that the Quraysh, led by Abū Sufyān, had come together in great numbers to fight against them and to finish them off, warning them against meeting them. But their words and attempts to scare them only increased their reliance on Allah and their trust in His promise.

2. 8:2Al-AnfalConsolation
   إِنَّمَا ٱلۡمُؤۡمِنُونَ ٱلَّذِينَ إِذَا ذُكِرَ ٱللَّهُ وَجِلَتۡ قُلُوبُهُمۡ وَإِذَا تُلِيَتۡ عَلَيۡهِمۡ ءَايَٰتُهُۥ زَادَتۡهُمۡ إِيمَٰنٗا وَعَلَىٰ رَبِّهِمۡ يَتَوَكَّلُونَ
   They only are the (true) believers whose hearts feel fear when Allah is mentioned, and when His revelations are recited unto them they increase their faith, and who trust in their Lord;
   In context

   The true believers are those who, when Allah is mentioned, feel awe of Him in their hearts, which make them do good actions. When the verses of Allah are read to them they reflect on them and it increases their faith, and they rely on Allah alone to bring them what is in their interests and to protect them from what is bad for them.

3. 9:124At-Tawbah
   وَإِذَا مَآ أُنزِلَتۡ سُورَةٞ فَمِنۡهُم مَّن يَقُولُ أَيُّكُمۡ زَادَتۡهُ هَٰذِهِۦٓ إِيمَٰنٗاۚ فَأَمَّا ٱلَّذِينَ ءَامَنُواْ فَزَادَتۡهُمۡ إِيمَٰنٗا وَهُمۡ يَسۡتَبۡشِرُونَ
   And whenever a surah is revealed there are some of them who say: Which one of you hath thus increased in faith? As for those who believe, it hath increased them in faith and they rejoice (therefor).
   In context

   When Allah revealed a sūrah to the Messenger (peace and blessings be upon him), some of the hypocrites would ask by way of mocking and ridicule; 'Which one of you believers has had his faith increase?

4. 28:28Al-QasasPromise
   قَالَ ذَٰلِكَ بَيۡنِي وَبَيۡنَكَۖ أَيَّمَا ٱلۡأَجَلَيۡنِ قَضَيۡتُ فَلَا عُدۡوَٰنَ عَلَيَّۖ وَٱللَّهُ عَلَىٰ مَا نَقُولُ وَكِيلٞ
   He said: That (is settled) between thee and me. Whichever of the two terms I fulfil, there will be no injustice to me, and Allah is Surety over what we say.
   In context

   Moses (peace be upon him) said, “The agreement between us is as we agreed; whichever of the two periods I work for you, eight years or ten, I would have fulfilled my end of the deal, so do not ask me for anything above that; Allah is a witness and a guardian over what we say.

5. 33:22Al-AhzabPromise
   وَلَمَّا رَءَا ٱلۡمُؤۡمِنُونَ ٱلۡأَحۡزَابَ قَالُواْ هَٰذَا مَا وَعَدَنَا ٱللَّهُ وَرَسُولُهُۥ وَصَدَقَ ٱللَّهُ وَرَسُولُهُۥۚ وَمَا زَادَهُمۡ إِلَّآ إِيمَٰنٗا وَتَسۡلِيمٗا
   And when the true believers saw the clans, they said: This is that which Allah and His messenger promised us. Allah and His messenger are true. It did but confirm them in their faith and resignation.
   In context

   When the believers saw the companies which had gathered to fight them, they said: “This is the test, tribulation and help Allah and His Messenger promised us, and Allah and His Messenger were true in this, for it has occurred”. And seeing the companies did not increase them except in faith and submission to Him.

6. 48:4Al-Fath
   هُوَ ٱلَّذِيٓ أَنزَلَ ٱلسَّكِينَةَ فِي قُلُوبِ ٱلۡمُؤۡمِنِينَ لِيَزۡدَادُوٓاْ إِيمَٰنٗا مَّعَ إِيمَٰنِهِمۡۗ وَلِلَّهِ جُنُودُ ٱلسَّمَٰوَٰتِ وَٱلۡأَرۡضِۚ وَكَانَ ٱللَّهُ عَلِيمًا حَكِيمٗا
   He it is Who sent down peace of reassurance into the hearts of the believers that they might add faith unto their faith. Allah's are the hosts of the heavens and the earth, and Allah is ever Knower, Wise -
   In context

   Allah is the One Who sent down stability and tranquility into the hearts of the believers so that they increase in faith over and above their faith. To Allah alone belongs the forces of the heavens and the earth, He supports with them whoever of His servants He wishes. Allah knows the interests of His servants and He is Wise in the assistance and support that He gives.

7. 74:31Al-Muddaththir
   وَمَا جَعَلۡنَآ أَصۡحَٰبَ ٱلنَّارِ إِلَّا مَلَـٰٓئِكَةٗۖ وَمَا جَعَلۡنَا عِدَّتَهُمۡ إِلَّا فِتۡنَةٗ لِّلَّذِينَ كَفَرُواْ لِيَسۡتَيۡقِنَ ٱلَّذِينَ أُوتُواْ ٱلۡكِتَٰبَ وَيَزۡدَادَ ٱلَّذِينَ ءَامَنُوٓاْ إِيمَٰنٗا وَلَا يَرۡتَابَ ٱلَّذِينَ أُوتُواْ ٱلۡكِتَٰبَ وَٱلۡمُؤۡمِنُونَ وَلِيَقُولَ ٱلَّذِينَ فِي قُلُوبِهِم مَّرَضٞ وَٱلۡكَٰفِرُونَ مَاذَآ أَرَادَ ٱللَّهُ بِهَٰذَا مَثَلٗاۚ كَذَٰلِكَ يُضِلُّ ٱللَّهُ مَن يَشَآءُ وَيَهۡدِي مَن يَشَآءُۚ وَمَا يَعۡلَمُ جُنُودَ رَبِّكَ إِلَّا هُوَۚ وَمَا هِيَ إِلَّا ذِكۡرَىٰ لِلۡبَشَرِ
   We have appointed only angels to be wardens of the Fire, and their number have We made to be a stumbling-block for those who disbelieve; that those to whom the Scripture hath been given may have certainty, and that believers may increase in faith; and that those to whom the Scripture hath been given and believers may not doubt; and that those in whose hearts there is disease, and disbelievers, may say: What meaneth Allah by this similitude? Thus Allah sendeth astray whom He will, and whom He will He guideth. None knoweth the hosts of thy Lord save Him. This is naught else than a Reminder unto mortals.
   In context

   I did not make the wardens of the Fire except angels, so humans do not have the power to face them. Abu Jahl was lying when he and his people claimed that they have the ability to attack them and then they will come out of the Fire.