Revelation of Baha-ullah The Revelation of Baha-ullah in a Sequence of Four Lessons. This book, "The Revelation of Baha-ullah", by Isabella D. Brittingham, is a replication of a book originally published before 1902. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.