Ibrahim 14:52

Hatha balaghun linnasiwaliyuntharoo bihi waliyaAAlamoo annama huwa ilahunwahidun waliyaththakkara oloo al-albab

This [Qur’ān] is notification for the people that they may be warned thereby and that they may know that He is but one God and that those of understanding will be reminded.

This is a message for mankind, so that they (take lesson and) be warned, and so that they may know that He is One God, and so that the people of understanding may observe the advice.