One of the foremost books of the Revelation of Bahá'u'lláh, the Kitáb-i-Iqan contains Bahá'u'lláh's explanations of the basic tenets of the Bahá'í Faith and of the continuity of religion as it has been revealed throughout the ages. This book affirms the unity of the Prophets, the universality of Their Message, the identity of Their fundamental teachings, the sanctity of Their scriptures, and the twofold character of Their stations.