37:170
فَكَفَرُوا۟ بِهِۦ ۖ فَسَوْفَ يَعْلَمُونَ ١٧٠
Saheeh International
But they disbelieved in it, so they are going to know.
Tafsir of "Ibn Kathir" (English)
But they disbelieve therein, so they will come to know!This is a definite and stern threat because of their disbelief in their Lord and their rejection of His Messenger