Surah Al-Anbya 21:1

ٱقْتَرَبَ لِلنَّاسِ حِسَابُهُمْ وَهُمْ فِى غَفْلَةٍ مُّعْرِضُونَ

[The time of] their account has approached for the people, while they are in heedlessness turning away.

Translation: Saheeh International

Tafsir

Nigh has drawn for mankind the people of Mecca the deniers of the Resurrection their reckoning on the Day of Resurrection yet they are heedless of it disregardful of the preparation required for it by way of embracing faith.

Excerpt from Tafsir al-Jalalayn, commentary on 21:1, via Quran.com. The reader has the full commentary and 9 more tafsirs.