He hastens for the believers a share of mercy within their hearts and elsewhere: the sweetness of faith they sense and taste, the expansion of their breasts for Islam, and other delights that flow from faith, knowledge, and righteous deeds—joys beyond description.
The Exalted, in completing His account of the hypocrites, said:
"Like those before you: they were mightier than you in strength and more abundant in wealth and children" (Q 9:69).
Regarding this prefixed kāf of comparison, one opinion holds that it is in the nominative, functioning as the predicate of an omitted subject—i.e., "You are like those before you." Another opinion is that it is in the accusative, governed by an omitted verb, meaning: "You acted like those before you," as al-Namir ibn Tawlab said:
"Like today—sought after yet none pursue,"
meaning, "I have never seen the like of today." On both of these views, the likeness pertains to the deeds of the previous peoples.
A third view is that the comparison concerns the punishment; the governing verb is therefore suppressed, the sense being: "He cursed and punished them just as He cursed those who were before you."