Presented at the Irfan Colloquia Session #77 in German, Tambach, Germany (July 19-22, 2007).
First published in German in Beiträge des 'Irfán-Kolloquiums 2007/8, volume 5 under the title "Textzusammenhang und Kritik: Ein Fallbeispiel anhand eines Briefes von Shoghi Effendi," 2009. Translated into English by the author.