Indeed, in verse 14 of the Surat al-Mulk, Allah calls attention to that very fact, stating, “Does He Who created not then know? He is the All-Pervading, the All-Aware.” Al-Khabir, that is, “the All-Aware”, which is the attribute of Allah mentioned in the verse, means the One Who is aware of the inner and secret aspect of all things.
Such persons are quite common, however. There are many who think that if they can avoid thinking of these concerns, they themselves can be at peace. Though he finds himself in a cruel world, this does not trouble him or affect his conscience.