The Twelve Imams
According to Twelver Shia muslims these twelve Guiders are authorized by Allah for the guidance of Muslims and for protection of Islam and they are sinless. It is said by Twelver Shi'a Muslims that the Twelve Imams were foretold in the in the sayings of Muhammad.
Its is believed by Twelver Shi'a Muslims that these Imams have the knowledge of each and every thing which is told them by God.‘Alī was the first Imam of this line every Imam was the son of the previous Imam, without Husayn ibn Ali, who was the brother of Hasan ibn Ali. and the last Imam is Muhammad al-Mahdi which is alive and will appear near the day of judgement.