The Báb, born Siyyid `Alí Muhammad Shírází ... was the founder of Bábism, and one of the central figures of the Bahá'í Faith.
To Bahá'ís, the Báb fills a similar role as Elijah or John the Baptist; a predecessor or forerunner who paved the way for their own religion. Bahá'u'lláh, the founder of the Bahá'í Faith, was a follower of the Báb and claimed in 1863 to be the fulfillment of the Báb's prophecy, 13 years after the former's death.
Bahá'í teachings are in some ways similar to other monotheistic faiths: God is considered single and all-powerful. However, Bahá'u'lláh taught that religion is orderly and progressively revealed by one God through Manifestations of God who are the founders of major world religions throughout history; Buddha, Jesus, and Muhammad, and Zoroaster being the most recent in the period before the Báb and Bahá'u'lláh. Bahá'ís regard the major religions as fundamentally unified in purpose, though varied in social practices and interpretations.
There is a similar emphasis on the unity of all people, openly rejecting notions of racism and nationalism. At the heart of Bahá'í teachings is the goal of a unified world order that ensures the prosperity of all nations, races, creeds, and classes.
The Bahá'í Faith is a religion teaching the essential worth of all religions, and the unity and equality of all people ... It is estimated to have between 5 and 8 million adherents, known as Bahá'ís, spread out into most of the world's countries and territories.