37:170
فَكَفَرُوا۟ بِهِۦ ۖ فَسَوْفَ يَعْلَمُونَ
fakafarū bihi fasawfa yaʿlamūna
yet now they reject [the Quran]. They will soon realize.
But (now that the Qur’ân has come) they disbelieve therein (i.e. in the Qur’ân and in Prophet Muhammad صلى الله عليه وسلم , and all that he brought, - the Divine Revelation), so they will come to know!