هذا يوم الفصل الذي كنتم به تكذبون (37:21) بالانجليزي

(37:21) 'Yes, this is the Day of Final Decision that you used to deny as a lie.' *13

Tafseer Abu-al-A'la Maududi

Page 446 English Traditional

*13) It may be that this is said by the believers, or by the angels; or it may be, as it were, the common expression of the conditions prevailing in the plain of Resurrection or it may as well be another reaction of the people themselves. That is, they may be saying in their hearts. "In the world, you lived in a way as if no Day of Judgement would ever come. Now you have come to your doom! This is the same Day that you used to deny ! "