Surah Ash-Shuraa 42:18

يَسْتَعْجِلُ بِهَا ٱلَّذِينَ لَا يُؤْمِنُونَ بِهَا ۖ وَٱلَّذِينَ ءَامَنُوا۟ مُشْفِقُونَ مِنْهَا وَيَعْلَمُونَ أَنَّهَا ٱلْحَقُّ ۗ أَلَآ إِنَّ ٱلَّذِينَ يُمَارُونَ فِى ٱلسَّاعَةِ لَفِى ضَلَـٰلٍۭ بَعِيدٍ

Those who do not believe in it are impatient for it, but those who believe are fearful of it and know that it is the truth. Unquestionably, those who dispute concerning the Hour are in extreme error.

Translation: Saheeh International

Tafsir

Those who do not believe in it seek to hasten it they say ‘When will it come?’ as a presumption on their part that it will never come; but those who believe are apprehensive of it and know that it is the truth. Nay but verily those who are in doubt those who argue concerning the Hour are indeed in extreme error!

Excerpt from Tafsir al-Jalalayn, commentary on 42:18, via Quran.com. The reader has the full commentary and 9 more tafsirs.