The Bahá'í Faith is a religion founded by Bahá'u'lláh in 19th century Persia. Bahá'ís number around 6 million in more than 200 countries around the world.

According to Bahá'í teachings, religious history is seen as an evolving educational process for mankind, through God's messengers, which are termed Manifestations of God. Bahá'u'lláh is seen as the most recent, pivotal, but not final of these individuals. He claimed to be the expected redeemer and teacher prophesied in Christianity, Islam, Hinduism, Buddhism, and other religions, and that his mission was to establish a firm basis for unity throughout the world, and inaugurate an age of peace and justice, which Bahá'ís expect will inevitably arise.

"Bahá'í" can be an adjective referring to the Bahá'í Faith, or the term for a follower of Bahá'u'lláh (Bahá'í is not a noun meaning the religion as a whole). The term comes from the Arabic word Bahá’ , meaning "glory" or "splendor".

Bahá'ís believe in a single, imperishable God, the creator of all things, including all the creatures and forces in the universe.The existence of God is thought to be eternal, without a beginning or end,and is described as "a personal God, unknowable, inaccessible, the source of all Revelation, eternal, omniscient, omnipresent and almighty."Though inaccessible directly, God is nevertheless seen as conscious of his creation, with a will and purpose. Bahá'ís believe that God expresses this will in many ways, including through a series of divine messengers referred to as Manifestations of God or sometimes divine educators.In expressing God's intent, these manifestations are seen to establish religion in the world.

Bahá'í teachings state that God is too great for humans to fully comprehend, or to create a complete and accurate image. In the Bahá'í religion God is often referred to by titles , and there is a substantial emphasis on monotheism, as well as a rejection of such doctrines as the Trinity.

From : en.wkipedia.org