As-Saffat 37:170
فَكَفَرُوا۟ بِهِۦ ۖ فَسَوْفَ يَعْلَمُونَ
Fakafaroo bihi fasawfa yaAAlamoon
But they disbelieved in it, so they are going to know.
Then (once the divine book came to them,) they disbelieved in it. So, very soon they will come to know.