St. John the Divine had himself, with reference to these two successive Revelations, clearly prophesied: “The second woe is past; and, behold the third woe cometh quickly.” “This third woe,” ‘Abdu’l‑Bahá, commenting upon this verse, has explained, “is the day of the Manifestation of Bahá’u’lláh, the Day of God, and it is near to the day of the appearance of the Báb.” “All the peoples of the world,” He moreover has asserted, “are awaiting two Manifestations, Who must be contemporaneous; all wait for the fulfillment of this promise.” And again: “The essential fact is that all are promised two Manifestations, Who will come one following on the other.” Shaykh Ahmad-i-Ahsá’í, that luminous star of Divine guidance who had so clearly perceived, before the year sixty, the approaching glory of Bahá’u’lláh, and laid stress upon “the twin Revelations which are to follow each other in rapid succession,” had, on his part, made this significant statement regarding the approaching hour of that supreme Revelation, in an epistle addressed in his own hand to Siyyid Kázim: “The mystery of this Cause must needs be made manifest, and the secret of this Message must needs be divulged. I can say no more. I can appoint no time. His Cause will be made known after Hín (68).”
- Shoghi Effendi (God Passes By, chapter 6)