Verse 18

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

Challenging it are those who do not believe in it. As for the faithful, they are fearful thereof and they know that it is the truth. Absolutely, those who are doubtful of the Hour have gone far astray.