and they swore by allah vehemently in their oaths that if any sign came to them they will certainly believe in it say the signs are with allah and what do you people know that if they came to them they will not believe.
وأقسموا بالله جهد أيمانهم لئن جاءتهم آية ليؤمنن بها قل إنما الآيات عند الله وما يشعركم أنها إذا جاءت لا يؤمنون