Have you not considered those who left their homes in many thousands, fearing death? Allah said to them, "Die"; then He restored them to life. And Allah is full of bounty to the people, but most of the people do not show gratitude.  

أَلَمْ تَرَ إِلَى الَّذِينَ خَرَجُوا مِنْ دِيَارِهِمْ وَهُمْ أُلُوفٌ حَذَرَ الْمَوْتِ فَقَالَ لَهُمُ اللَّهُ مُوتُوا ثُمَّ أَحْيَاهُمْ ۚ إِنَّ اللَّهَ لَذُو فَضْلٍ عَلَى النَّاسِ وَلَٰكِنَّ أَكْثَرَ النَّاسِ لَا يَشْكُرُونَ  

And fight in the cause of Allah and know that Allah is Hearing and Knowing.  

وَقَاتِلُوا فِي سَبِيلِ اللَّهِ وَاعْلَمُوا أَنَّ اللَّهَ سَمِيعٌ عَلِيمٌ