And know that Allaah knows what is in your minds, so fear Him.”
{Surah al-Baqarah:235}

Abu Hurairah (May Allah be pleased with him) reported: Messenger of Allah (PBUH) said, “Allah, the Exalted, has said: `I will declare war against him who treats with hostility a pious worshipper of Mine. And the most beloved thing with which My slave comes nearer to Me, is what I have enjoined upon him; and My slave keeps on coming closer to Me through performing Nawafil (voluntary prayers or doing extra deeds besides what is obligatory) until I love him, (so much so that) I become his hearing with which he hears, and his sight with which he sees, and his hand with which he strikes, and his leg with which he walks; and if he asks Me something, I will surely give him, and if he seeks My Protection (refuge), I will surely protect him”.
[Al-Bukhari]

Say, Die in your rage. Indeed, Allah is Knowing of that within the breasts.”” (Surah ‘Āli `Imrān_119)

Allah’s Apostle (SA) said,”No calamity befalls a Muslim but that Allah expiates some of his sins because of it, even though it were the prick he receives from a thorn.”
[Sahih Bukhari]

24:55
وَعَدَ اللَّهُ الَّذِينَ آمَنُوا مِنكُمْ وَعَمِلُوا الصَّالِحَاتِ لَيَسْتَخْلِفَنَّهُم فِي الْأَرْضِ كَمَا اسْتَخْلَفَ الَّذِينَ مِن قَبْلِهِمْ وَلَيُمَكِّنَنَّ لَهُمْ دِينَهُمُ الَّذِي ارْتَضَى لَهُمْ وَلَيُبَدِّلَنَّهُم مِّن بَعْدِ خَوْفِهِمْ أَمْنًا يَعْبُدُونَنِي لَا يُشْرِكُونَ بِي شَيْئًا وَمَن كَفَرَ بَعْدَ ذَلِكَ فَأُوْلَئِكَ هُمُ الْفَاسِقُونَ

Allah has promised those among you who believe, and do righteous good deeds, that He will certainly grant them succession to (the present rulers) in the earth, as He granted it to those before them, and that He will grant them the authority to practise their religion, that which He has chosen for them (i.e. Islam). And He will surely give them in exchange a safe security after their fear (provided) they (believers) worship Me and do not associate anything (in worship) with Me. But whoever disbelieved after this, they are the rebellious sinners.

The mosques of Allah are only to be maintained by those who believe in Allah and the Last Day and establish prayer and give zakah and do not fear except Allah , for it is expected that those will be of the [rightly] guided.
Surah At-Tawbah (9:18)

http://www.youtube.com/watch?v=p58svpQ1gKQ&feature=related

“What is with you passes away and what is with Allah is enduring; and We will most certainly give to those who are patient their reward for the best of what they did.”
[16:96]

مَنْ قَتَلَ نَفْسًا مُعَاهَدًا لَمْ يَرَحْ رَائِحَةَ الْجَنَّةِ، وَإِنَّ رِيحَهَا يُوجَدُ مِنْ مَسِيرَةِ أَرْبَعِينَ عَامًا
Whoever kills a person protected by a treaty will never smell the fragrance of Paradise, and indeed its fragrance can be found a distance of forty years of travel. [Sahih Bukhari, Volume 9, Book 83, Number 49]

What comes to you of good is from Allah , but what comes to you of evil, [O man], is from yourself. And We have sent you, [O Muhammad], to the people as a messenger, and sufficient is Allah as Witness.
Surah An-Nisā’ (4:79)

Narrated Abu Huraira: Allah’s Apostle said, “When anyone of you stands for the prayers, Satan comes and puts him in doubts till he forgets how many Rakat he has prayed. So if this happens to anyone of you, he should perform two prostrations of Sahu while sitting {Sahih Bukhari, Volume 2, Book 22, Number 324}

“We created not the heavens, the earth, and all between them, but for just ends. And the Hour is surely coming (when this will be manifest). So overlook (any human faults) with gracious forgiveness. For verily it is thy Lord who is the Master-Creator, knowing all things. And We have bestowed upon thee the Seven oft-repeated verses (Surah al-Fatiha) and the Grand Qur’an. Strain not thine eyes (wistfully) at what We have bestowed on certain classes of them, nor grieve over them: but lower thy wing (in gentleness) to the Believers.”- Al Hijr, 85-88