Attendance at Nineteen Day Feasts is not obligatory, but
highly desirable, and effort should be made by the friends not to deprive
themselves of this spiritual and communal rallying-point once in every Bahá'í
month.
- Shoghi Effendi (From a letter written on behalf of Shoghi Effendi, 23 December 1948 to
an individual believer; The Compilation of Compilations, vol. I, The Nineteen
Day Feast)