Messianism is the belief in the advent of a messiah who acts as the savior or liberator of a group of people. Messianism originated as an Abrahamic religious belief, but other religions have messianism-related concepts. Religions with a messiah concept include Zoroastrianism (Saoshyant), Judaism (the Mashiach), Buddhism (Maitreya), Hinduism (Kalki), Taoism (Li Hong), and Bábism (He whom God shall make manifest).
In Judaism, the messiah will be a future Jewish king from the line of David and redeemer of the Jewish people and humanity. In Christianity, Jesus is the messiah, the savior and redeemer. In Islam, Jesus was a prophet and the messiah of the Jewish people.