وَمَا نُرِيهِم مِّنْ ءَايَةٍ إِلَّا هِىَ أَكْبَرُ مِنْ أُخْتِهَا ۖ وَأَخَذْنَـٰهُم بِٱلْعَذَابِ لَعَلَّهُمْ يَرْجِعُونَ
Wa maa nureehim min aayatin illaa hiya akbaru min ukhtihaa wa akhaznaahum bil'azaabi la'allahum yarji'oon
even though each sign We showed them was greater than the previous one. We inflicted torment on them so that they might return to the right path.
And every sign we showed them was greater than the one before, and we seized them with torment, so that they might turn back.