Allah(swt), told us to make us realize

 هُوَ الَّذِي أَخْرَجَ الَّذِينَ كَفَرُوا مِنْ أَهْلِ الْكِتَابِ مِن دِيَارِهِمْ لِأَوَّلِ الْحَشْرِ مَا ظَنَنتُمْ أَن يَخْرُجُوا وَظَنُّوا أَنَّهُم مَّانِعَتُهُمْ حُصُونُهُم مِّنَ اللَّهِ فَأَتَاهُمُ اللَّهُ مِنْ حَيْثُ لَمْ يَحْتَسِبُوا وَقَذَفَ فِي قُلُوبِهِمُ الرُّعْبَ يُخْرِبُونَ بُيُوتَهُم بِأَيْدِيهِمْ وَأَيْدِي الْمُؤْمِنِينَ فَاعْتَبِرُوا يَا أُولِي الْأَبْصَارِ 59:2

(Fathe Muhammad Jalandari)
وہي تو ہے جس نے کفار اہل کتاب کو حشر اول کے وقت ان کے گھروں سے نکال ديا. تمہارے خيال ميں بھي نہ تھا کہ وہ نکل جائيں گے اور وہ لوگ يہ سمجھے ہوئے تھے کہ ان کے قلعے ان کو خدا (کے عذاب) سے بچا ليں گے. مگر خدا نے ان کو وہاں سے آ ليا جہاں سے ان کو گمان بھي نہ تھا. اور ان کے دلوں ميں دہشت ڈال دي کہ اپنے گھروں کو خود اپنے ہاتھوں اور مومنوں کے ہاتھوں سے اُجاڑنے لگے تو اے (بصيرت کي) آنکھيں رکھنے والو عبرت پکڑو 59:2

(Muhammad Assad)
 59:2 He it is who turned out of their homes, at the time of [their] first gathering [for war], such of the followers of earlier revelation as were bent on denying the truth. You did not think [O believers] that they would depart [without resistance] - just as they thought that their strongholds would protect them against God: but God came upon them in a manner which they had not expected, and cast terror into their hearts; [and thus] they destroyed their homes by their own hands as well as the hands of the believers. Learn a lesson, then, O you who are endowed with insight!59:2

(Yousaf Ali)
 59:2 It is He Who got out the Unbelievers among the People of the Book from their homes at the first gathering (of the forces). Little did ye think that they would get out: And they thought that their fortresses would defend them from Allah. But the (Wrath of) Allah came to them from quarters from which they little expected (it), and cast terror into their hearts, so that they destroyed their dwellings by their own hands and the hands of the Believers, take warning, then, O ye with eyes (to see)!59:2