June 30

In the simultaneous endeavor to pursue their studies and to delve deeply into the Baha’i Teachings, believers are enjoined to maintain a keen awareness that the Revelation of Baha’u’llah is the standard of truth against which all other views and conclusions are to be measured. They are urged to be modest about their accomplishments, and to bear in mind always the statement of Baha'u'llah that: 

The heart must needs therefore be cleansed from the idle sayings of men, and sanctified from every earthly affection, so that it may discover the hidden meaning of divine inspiration, and become the treasury of the mysteries of divine knowledge. 
- The Universal House of Justice  (From a letter dated 10 October 1993 written on behalf of the Universal House of justice to an individual believer; included in a compilation prepared by the Research Department of the Universal House of Justice: ‘Issues Related to the Study of the Baha’i Faith’)