They thought that they would not be tested, so they turned blind and deaf, then God redeemed them, but then many of them turned blind and deaf again. God is Seer of everything they do.
وَحَسِبوا أَلّا تَكونَ فِتنَةٌ فَعَموا وَصَمّوا ثُمَّ تابَ اللَّهُ عَلَيهِم ثُمَّ عَموا وَصَمّوا كَثيرٌ مِنهُم وَاللَّهُ بَصيرٌ بِما يَعمَلونَ
wa hasibooo allaa takoona fitnatun fa’amoo wa sammoo summa taabal laahu ‘alaihim summa ‘amoo wa sammoo kaseerum minhum; wallaahu baseerum bimaa ya’maloon