Tafsir of Ghafir 40:59

إن الساعة ﻻتية

Verily, the Hour (Day of Judgement) is surely coming, means, it will indeed come to pass.

ﻻ ريب فيها ولكن أكثر الناس ﻻ يومنون

there is no doubt about it, yet most men believe not. means, they do not believe in it, and in fact they doubt its existence altogether