Quran 14:42

وَلَا تَحۡسَبَنَّ ٱللَّهَ غَـٰفِلاً عَمَّا يَعۡمَلُ ٱلظَّـٰلِمُونَ‌ۚ إِنَّمَا يُؤَخِّرُهُمۡ لِيَوۡمٍ۬ تَشۡخَصُ فِيهِ ٱلۡأَبۡصَـٰرُ ٤٢

Do not ever think that ALLAH is unaware of what the transgressors are doing. He only respites them until a day where the eyes stare in horror.