January 13. On this date in 1923, Shoghi Effendi wrote "if an avowed follower of Bahá'u'lláh were to immerse himself in, and fathom the depths of, the ocean of these heavenly teachings,...such a person's life, materially, intellectually and spiritually, will be safe from toil and trouble, and unaffected by setbacks and perils, or any sadness or despondency."

January 13. On this date in 1923, Shoghi Effendi wrote (also here) "if an avowed follower of Bahá'u'lláh were to immerse himself in, and fathom the depths of, the ocean of these heavenly teachings,...such a person's life, materially, intellectually and spiritually, will be safe from toil and trouble, and unaffected by setbacks and perils, or any sadness or despondency."

Praise be to God that the spirit of the Holy Writings and Tablets which have been revealed in this wondrous Dispensation concerning matters of major or minor importance, whether essential or otherwise, related to the sciences and the arts, to natural philosophy, literature, politics or economics, have so permeated the world that since the inception of the world in the course of past Dispensations and bygone ages nothing like it has ever been seen or heard. Indeed if an avowed follower of Bahá'u'lláh were to immerse himself in, and fathom the depths of, the ocean of these heavenly teachings, and with utmost care and attention deduce from each of them the subtle mysteries and consummate wisdom that lie enshrined therein, such a person's life, materially, intellectually and spiritually, will be safe from toil and trouble, and unaffected by setbacks and perils, or any sadness or despondency. (Letter of Shoghi Effendi to the believers in Ádhirbáyján, dated 13 January 1923, translated from the Persian at the Bahá'í World Centre; cited in "The Importance of Deepening our Knowledge and Understanding of the Faith,"compiled by the Research Department, BWC, 1983)