"...[Thanks to his (Hazrat Mahdi's (as)] blessing) SOMEONE WHO IS IGNORANT, FEARFUL AND MEAN AT NIGHT WILL BE WELL-INFORMED, BRAVE AND GENEROUS IN THE MORNING. His (Allah's) help will go before him [Hazrat Mahdi (as)]...He will follow in the footsteps of the messenger of Allah and make no errors; There will be an angel who supports him [Hazrat Mahdi (as)] without his seeing it, he will set the exhausted on their feet and help the weak, he will practice what he preaches and his words will match his actions."  

WHEN HAZRAT MAHDI (AS) APPEARS, Allah will so manifest the powers of sight and hearing in believers that HAZRAT MAHDI (AS) WILL CALL TO THE WORLD FROM WHERE HE IS, AND THEY WILL HEAR AND EVEN SEE HIM WITHOUT ANY INTERMEDIARY. 

The imam (as) [Hazrat Mahdi (as)] will (spiritually) conquer the east and west of the world and bring Islam (Islamic moral values) to rule across the world... ALMIGHTY ALLAH WILL GIVE PEOPLE SUCH A POWER THAT EVERYONE WILL HEAR HIS [HAZRAT MAHDI'S (AS)] VOICE FROM WHERE THEY ARE, and the imam (as) will give life to Islam...