Qur'an, Al-Baqara, Surah 2:47-48
"Children of Israel, remember the favors which I have bestowed upon you. Remember that I have exalted you above all nations. Be on your guard against the day when every soul will stand alone. At that time no one will be able to intercede for the individual soul; no compensation will be accepted for past sins. Every soul will face me without help."