1916 - Tablet of the Divine Plan Revealed
TABLET TO THE BAHÁ'ÍS OF CANADA AND GREENLAND Revealed on April 5, 1916, in the garden adjacent to the Shrine of Bahá'u'lláh, and addressed to the Bahá'ís of Canada -- Newfoundland, Prince Edward Island, Nova Scotia, New Brunswick, Quebec, Saskatchewan, Manitoba, Ontario, Alberta, British Columbia, Yukon, Mackenzie, Keewatin, Ungava, Franklin Islands -- and Greenland. (Abdu'l-Baha, Tablets of the Divine Plan, p. 25)
1922 - Shoghi Effendi left Haifa for Europe, on April 5th, accompanied by his eldest cousin. (Ruhiyyih Khanum, The Guardian of the Baha'i Faith, p. 19)
1942 - the greatest of all battles raging in the world today is the spiritual battle.
If we could perceive the true reality of things we would see that the greatest of all battles raging in the world today is the spiritual battle. If the believers like yourself, young and eager and full of life, desire to win laurels for true and undying heroism, then let them join in the spiritual battle -- whatever their physical occupation may be -- which involves the very soul of man. The hardest and the noblest task in the world today is to be a true Bahá'í; this requires that we defeat not only the current evils prevailing all over the world, but the weaknesses, attachments to the past, prejudices, and selfishnesses that may be inherited and acquired within our own characters; that we give forth a shining and incorruptible example to our fellow-men.
(5 April 1942 to an individual believer) Letter on behalf of Shoghi Effendi
(Compilations, The Compilation of Compilations vol. I, p. 381)