if allah were to take people to task for their deeds he would not leave any living creature on earth but he grants them respite to an appointed time. when their appointed time comes to an end surely allah fully observes his servants.
ولو يؤاخذ الله الناس بما كسبوا ما ترك على ظهرها من دابة ولكن يؤخرهم إلى أجل مسمى فإذا جاء أجلهم فإن الله كان بعباده بصيرا