"The Hidden Words" is another book written by Baháʼu'lláh during the same period, containing 153 short passages in which Baháʼu'lláh claims to have taken the basic essence of certain spiritual truths and written them in brief form.The Baháʼí Faith formed from the Iranian religion of the Báb, a merchant who began preaching a new interpretation of Shia Islam in 1844.