The Most Holy Book of the Bahá’í Faith is the Kitáb-i-Aqdas, the book of laws written by Bahá’u’lláh. It is part of a large body of scriptures authored by Him. Comprising an estimated 100 volumes, these writings cover topics of a wide range, including laws and principles for personal conduct and the governance of society, as well as mystical writings dealing with the progress of the soul and its journey towards God. The many writings of the Báb and those of ‘Abdu’l-Bahá are also a sacred source of reference for Bahá’ís. Moreover, Bahá’ís recognize the Bible, the Qur’an, and the holy texts of the world’s other revealed religions.