فَكَيۡفَ تَتَّقُونَ إِن كَفَرۡتُمۡ يَوۡمٗا يَجۡعَلُ ٱلۡوِلۡدَٰنَ شِيبًا ١٧
Then how can you fear, if you disbelieve, a Day that will make the children white-haired?1
Translation: Saheeh International (English)
1 Another meaning is "How can you avoid [punishment]" on such a Day?
Each word's meaning and sound
So how will you protect yourselves - if you reject Allah and deny His messenger - from a long, severe day that will make the head of young children white because of the severity of its horror and its length.
Al-Mukhtasar in interpreting the Noble Quran