(51) وَ أَنْذِرْ بِهِ الَّذِينَ يَخافُونَ أَنْ يُحْشَرُوا إِلى رَبِّهِمْ لَيْسَ لَهُمْ مِنْ دُونِهِ وَلِيٌّ وَ لا شَفِيعٌ لَعَلَّهُمْ يَتَّقُونَ
51. " And warn with it (the Qur'an) those who fear that they will be mustered unto their Lord; (for) there is not any guardian nor intercessor for them besides Him, so that they may guard themselves (against evil) ."
At the end of the previous verse, the words meant that the blind and the seeing one are not equal. Now, in this verse, the Prophet (p.b.u.h.) is commanded to warn those who are in awe of the Day of Resurrection. It says :
This phrase means that those whose eyes of understanding is vigilant, as much as they probable there will be a Reckoning Day, have been prepared to accept the Truth under the light of this probability and with the fright of responsibility.
Then, the verse continues saying that such vigilant persons are in awe of a day when :
Yes, the Prophet (p.b.u.h.) is commanded to warn such people and to invite them unto the Truth, because there is a hope that they may become pious and virtuous. The verse says :
Upon the commentary of this verse, Imam Sadiq (a.s.) says : " The Qur'an warns those who have the hope of reaching their Lord, and encourages them by what is with Him, because the Qur'an, whose intercession is acceptable, will be an intercessor for them." (1)
The Prophet (p.b.u.h.) said:" Learn the Qur'an, because on the Day of Judgement that Book will intercede its reciters." (Musnad-i-Hanbal, vol. 5, p. 251)
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(1) Majma'-ul-Bayan, Vol. 3, P.P. 304, 305, (Arabic version)