Translation:

45. And their predecessors rejected (the Truth); these have not received a tenth of what We had granted to those: yet when they rejected My apostles how (terrible) was My rejection (of them)!

Notes (Tafseer)

3856. Passing to Peoples before the immediate ancestors, the People of the Book, or the People of Saba and 'Ad and Thamud, had received favours and gifts, power and wealth, ten times more than were enjoyed by the Pagan Quraish. Yet when they turned away from Allah's Truth, Allah turned away from them, and what terrible consequences descended on them when they lost Allah's Grace! This should make everyone humble, not least the posterity of Muhammad the Messenger if they forsake Allah's Truths! For they have received a higher Teaching!