Taha 20:113

وَكَذَٰلِكَ أَنزَلْنَـٰهُ قُرْءَانًا عَرَبِيًّا وَصَرَّفْنَا فِيهِ مِنَ ٱلْوَعِيدِ لَعَلَّهُمْ يَتَّقُونَ أَوْ يُحْدِثُ لَهُمْ ذِكْرًا

Wakadhālika anzalnāhu qur'ānan ʿarabiyyan waṣarrafnā fīhi mina l-waʿīdi laʿallahum yattaqūna aw yuḥ'dithu lahum dhik'ran

And thus We have sent it down as an Arabic Qur’ān and have diversified therein the warnings that perhaps they will avoid [sin] or it would cause them remembrance.