Ever since man has inhabited the earth, he has had the wish to lead a social life filled with happines in its true sense and has striven towards this end. If such a wish were not to have an objective existence it would never have been imprinted upon man's inner nature, in the same way that if there were no food there would have been no hunger Therefore, by reason of inner necessity and determination, the future will see a day when human society will be replete with justice and when all will live in peace and tranquility, when human-beings will be fully possessed of virtue and perfection.
The establishment of such a condition will occur through human hands but with Divine succor. And the leader of such a society, who will be the saviour of mankind is none other than MAHDI.Now let us see what will be the situation during the time of reappearence of Hazrat Mahdi (A.S.) and what would be his Government. The answer to this can be found in the Holy Quran where in Sura Noor Ayat No. 55 it says:
"Allah has promised to those of you who believe and do good that He will most certainly make them rulers in the earth as He made rulers those before them, and that He will most certainly, after their fear, give them security in exchange; they shall serve Me, not associating aught with Me."
In The Anticipation Of The Dawn
You are called 'The Hidden Imam' because you are out of sight, not that you are not present, Being hidden, in the sense that one is not present, is an unjust calumny.
Those who believe in it fail to see the difference between Advent and Presence.
Your arrival, for which we are ardently waiting, refers to your advent, not your presence.
Your advent will be a great marvellous occurance, because your devout lovers have felt the very pleasure of the long-awaited Imam (as), On Fridays, they long for your arrival more restlessly, and face the Quibla to humbly supplicate the Author of the universe for His favor to allow your advent come to pass soon.
And now, we, for whom you are the object of love and devoutness and the torch for our noctural mystic travelling, hum and hymm for waiting for your advent.
the word "Mahdi" makes manifest the truth that reforming the world cannot be done through a self made or worldly reformer, for this such a person is needed whose guidance is arranged by Providence, and Allah has made him Mahdi and responsible for guidance, and "Qaim" points to this truth that, the task of reforming cannot be discharged sitting at home but advent, troubles, tribulations and storms have to be encountered, and combat with the universal commotion of injustice and oppression.