December 28

… the Will and Testament of ‘Abdu’l-Bahá, which, together with the Kitáb-i-Aqdas, constitutes the chief depository wherein are enshrined those priceless elements of that Divine Civilization, the establishment of which is the primary mission of the Bahá’í Faith. A study of the provisions of these sacred documents will reveal the close relationship that exists between them, as well as the identity of purpose and method which they inculcate. (Shoghi Effendi, from a letter dated February 27, 1929 in ‘The World Order of Baha’u’llah’)