March 15

... The powerful operations of this titanic upheaval [World War II] are comprehensible to none except such as have recognized the claims of both Bahá'u'lláh and the Bab. Their followers know full well whence it comes, and what it will ultimately lead to. Though ignorant of how far it will reach, they clearly recognize its genesis, are aware of its direction, acknowledge its necessity, observe confidently its mysterious processes, ardently pray for the mitigation of its severity, intelligently labor to assuage its fury, and anticipate, with undimmed vision, the consummation of the fears and the hopes it must necessarily engender.

This judgment of God, as viewed by those who have recognized Bahá'u'lláh as His Mouthpiece and His greatest Messenger on earth, is both a retributory calamity and an act of holy and supreme discipline. It is at once a visitation from God and a cleansing process for all mankind. Its fires punish the perversity of the human race, and weld its component parts into one organic, indivisible, world-embracing community. 
- Shoghi Effendi  (From a letter dated 28 March 1941 to the Bahá'ís of the West, published as ‘The Promised Day is Come’)