The Kitab-i-iqan, The Book of Certitude, is one of the an important scriptural works in the Baha'i Faith. In it, Baha'u'llah gives a sweeping overview of religious truth, explaining the underlying unity of the world's religions, describing the universality of the revelations humankind has revceived from the Prophets of God, illuminating their fundamental teachings, and elucidating allegorical passages from the New Testament and the Qur'an that have given rise to misunderstanding among religious leaders, practitioners, and the public.
About the Author
Baha'u'llah (1817–1892), meaning in Arabic 'the Glory of God,' is the Prophet and Founder of the Baha'i Faith. The main theme of Baha'u'llah's message is unity. He taught that there is only one God, that all the world's religions represent one changeless and eternal Faith of God, and that all humanity is one race destined to live in peace and harmony.