"Or do they think that We hear not their secrets & their private counsel? (Yes We do) & Our Messengers (appointed angels in charge of mankind) are by them, to record."
"And warn them (O Muhammad صلّى اللَّهُ عليه وسلّم) of the Day that is drawing near (i.e. the Day of Resurrection), when the hearts will be choking the throats, and they can neither return them (hearts) to their chests nor can they throw them out. There will be no friend, nor an intercessor for the Zâlimûn (polytheists & wrong-doers, etc.), who could be given heed to."