Book excerpt: The Covenant of Bah'u'llh is a unique and priceless heritage, unprecedented in past Dispensations. It carries within itself enormous potentialities for the future in the unfoldment of Bah'u'llh's new world order and ultimately the Golden Age of humankind. This book provides a wealth of material for the study of the Covenant. The Kitb-i-'Ahd, Bah'u'llh's own Will and Testament, and the Will and Testament of 'Abdu'l-Bah are quoted in full in this volume, and the historical events they refer to are explained.