Surah 64. At-Taghabun, Ayah 5

This is an allusion to the disasters and the suffering which, as history shows, inevitably befall every community or nation bent on rejecting the basic ethical truths and, thus, all standards of morality.

"The evil result of their conduct" begins to manifest itself in this very life, either in external events, or in internal restlessness and agonies of conscience. But its culminating force will be seen in the "grievous Penalty" of the Hereafter.