Imam Khomeini the religious and spiritual leader of the Muslim world frequently used to highlight significance of the 15th Sha'ban, the birthday of twelfth infallible Imam known as savior-and described the event as the most significant Eid for all humankind.The belief for emergence of the contemporary infallible Imam is considered to be a firm pillar of Shia Muslims' beliefs which reminds us of hope, faith, ultimate fortune and victory of good powers. This belief is well- established and confirmed by the holy verses of noble Quran as well. "And We wished to do a favor to those who were weak (and oppressed) in the land, and to make them rulers and to make them the inheritors." (al-Qasas, verse 5)This belief of great significance has been manifested in practical life of the founder of the Islamic Republic during all years of his righteous and sacred life. For an instance, one of his pupils once complained about the ongoing tough condition and circumstances, and expressed his doubts about the imminent victory during years of struggle for the Islamic Revolution. However, the great Imam consoled him and voiced his strong hope for victory despite all obstacles and hurdles."We will emerge victorious despite all tough circumstances," said the great Imam.The great leader of the Muslim world said elsewhere: "I am hopeful that the certain day will approach when the promise of God will come true and the oppressed will become inheritors of the earth. These are promises and good tidings of God the Almighty which will never fall short and will fully be fulfilled."According to Imam Khomeini, the victory of goodness shows that the universe never stays impartial regarding the good and bad. It also indicates that creator of this world doesn't remain neutral about the occurrences and happenings of this universe.Imam had strong belief that the creator of humankind and all other creatures was managing this universe with a very deep perception and wisdom. For that reason, he sent a historic letter to the former president of the then Soviet union and maintained that the eastern and western blocs were suffering from lack of spirituality and confronted with social moral decline. The historical facts and figures show that the great Imam's prediction came true in this regard within some years. We may easily jump to the conclusion that the belief in emergence of the twelfth Imamthe saviorshould be interpreted as undertaking serious efforts to launch and establish justice across the world's societies. In this sense and context, everybody who takes concrete and solid steps to implement real justice, will be considered closely associated to the infallible savior. For that reason, the great Imam closely allied and linked the Islamic Revolution wit.