May 28

A dynamic process, divinely propelled, possessed of undreamt-of potentialities, world-embracing in scope, world-transforming in its ultimate consequences, had been set in motion on that memorable night when the Báb communicated the purpose of His mission to Mullá Ḥusayn in an obscure corner of Shíráz. It acquired a tremendous momentum with the first intimations of Bahá’u’lláh’s dawning Revelation amidst the darkness of the Síyáh-Chál of Ṭihrán. It was further accelerated by the Declaration of His mission on the eve of His banishment from Baghdád. It moved to a climax with the proclamation of that same mission during the tempestuous years of His exile in Adrianople. Its full significance was disclosed when the Author of that Mission issued His historic summonses, appeals and warnings to the kings of the earth and the world’s ecclesiastical leaders. It was finally consummated by the laws and ordinances which He formulated, by the principles which He enunciated and by the institutions which He ordained during the concluding years of His ministry in the prison-city of Akká. 
- Shoghi Effendi  (‘God Passes By’)