Al-An'am 6:51

Waanthir bihi allatheena yakhafoonaan yuhsharoo ila rabbihim laysa lahum min doonihiwaliyyun wala shafeeAAun laAAallahum yattaqoon

And warn by it [i.e., the Qur’ān] those who fear that they will be gathered before their Lord - for them besides Him will be no protector and no intercessor - that they might become righteous.

Warn, with it, those who have the fear of being gathered before their Lord, with no one other than Him to support or to intercede. Maybe they become God-fearing.