The Book of Certitude/Kitab-i-Iqan Study Circle

The Kitáb-i-Íqán (Persian: كتاب ايقان‎, Arabic: كتاب الإيقان‎ “Book of Certitude“) is one of many books held sacred by followers of the Baháʼí Faith; it is their primary theological work

The book is in two parts: the first part deals with the foundational discourse that divine revelation is progressive and religions are related to one another, with each major monotheistic religion accepting the previous ones and, often in veiled terms, prophesying the advent of the next one. Since the questioner is a Muslim, Bahá’u’lláh uses verses from the Bible to show how a Christian could interpret his own sacred texts in allegorical terms to come to believe in the next dispensation. By extension the same method of interpretation can be used for a Muslim to see the validity of the claims of the Báb. The second and larger part of the book is the substantive discourse and deals with specific proofs, both theological and logical, of the mission of the Báb. One of the best-known and best-loved passages of this part is known as the “Tablet of the True Seeker.”

Free text:  https://www.bahai.org/library/authoritative-texts/bahaullah/kitab-i-iqan/