On the night before his death , Jesus could say in prayer to Jehovah : “ I have made your name known . ” Stemming from the root "h-d-y" in Arabic, the word Mahdi means "he who is guided in the right way" and the name is used to refer to the spiritual leader who will come before Judgement Day and in the Qur'an, the words "hadi" (he who guides to the right way" and "muhtadoon" (he who is in the right way" are frequently used as a synonym of Mahdi. For example, in the 21st verse of Surah Yasin, God commands: "Follow those who do not ask you for any wage (for preaching religion) and who have received guidance." This verse clearly and doubtlessly points to the Mahdi movement. There are many verses like this. Then again, every verse in the Qur'an which informs Muslims about the necessity of being united and heralds the glad tidings that Islamic moral values will prevail in the world, are in fact pointing to the Mahdi movement. When Muslims unite and the reign of Islam is established on Earth, the Mahdi is the one who will be the leader. Likewise, as heralded in the hadiths, the story of the Prophet Solomon, the life of the Prophet Joseph, the experiences of the Companions of the Cave (al-Kahf), and the struggle of Dhul-Qarnayn all contain significant symbolism about the Mahdi movement.