"The Divine Power of the Language of the Holy Quran" III

57:16 Has not the Time arrived for the Believers that their hearts in all humility should engage in the remembrance of Allah and of the Truth which has been revealed (to them), and that they should not become like those to whom was given Revelation aforetime, but long ages passed over them and their hearts grew hard? For many among them are rebellious transgressors.

Sahih Muslim Hadith 1757  Narrated by Abu Umamah who said that he heard Allah's Messenger (saws) say: Recite the Qur'an, for on the Day of Resurrection it will come as an intercessor for those who recite it.