1 story on this theme.
In *The Priceless Pearl* Rúḥíyyih Khánum describes the moment in the spring of 1953 when Shoghi Effendi, looking out from the newly completed Shrine of the Báb on the centenary of its Founder's enthronement, summoned the Bahá'í world to the most ambitious teaching plan in its history — to settle believers in every remaining unopened country and territory of the planet.