[Pooya/Ali Commentary 6:36] Only those who pay attention to the call of the Holy Prophet with an open heart and with fairness of mind will accept the truth and believe in the Holy Prophet, because if people listen to the truth sincerely and earnestly, they must believe. If their spiritual faculty is dead, then they are like the dead. They cannot escape being brought to face the judgement on the day of resurrection. Aqa Mahdi Puya says: Notwithstanding the universality of the teachings of the Holy Prophet, the real purpose of the divine guidance is to provide guidance to those who have enlightened minds and spiritual integrity to use their free will and intention in order to choose the right path and walk on it. Imam Jafar bin Muhammad al Sadiq said: "Do not try to increase the number of the true faithfuls by inviting those who do not possess the essential intelligence and tendency for development and progress. Certainly Allah has pointed out, in verse 17 and 18 of al Zumar, the men of understanding who study, examine, rationalize, and, through their free will and candid intention, make a choice of the path of Allah and reject the suggestions made by Shaytan ."