Messianism is the belief in a messiah, a savior or redeemer. Many religions have a messiah concept, including the Jewish Messiah, the Christian Christ, the Muslim Mahdi and Isa (Islamic name for Christian Jesus), the Buddhist Maitreya, the Hindu Kalki and the Zoroastrian Saoshyant. The state of the world is seen as hopelessly flawed beyond normal human powers of correction, and divine intervention through a specially selected and supported human is seen as necessary.
Messiah (Hebrew: משיח; mashiah, moshiah, mashiach, or moshiach, ("anointed [one]") is a term used in the Hebrew Bible to describe priests and kings, who were traditionally anointed. For example, Cyrus the Great, the king of Persia, is referred to as "God's anointed" (Messiah) in the Bible.
In Jewish messianic tradition and eschatology, the term came to refer to a future Jewish King from the Davidic line, who will be "anointed" with holy anointing oil and rule the Jewish people during the Messianic Age. In Standard Hebrew, The Messiah is often referred to as מלך המשיח, Méleḫ ha-Mašíaḥ (in the Tiberian vocalization pronounced Méleḵ hamMāšîªḥ), literally meaning "the Anointed King."