Use of the Guardian’s writings during devotional portion of 19-Day Feasts

Concerning the matter of the devotions at Nineteen Day Feasts. We see no contradiction in the three statements of the beloved Guardian. In essence they all describe exactly the same procedure, namely, that the Feast is opened with devotional readings, that is to say prayers and meditations, from the Writings of Bahá'u'lláh, the Báb and the Master. Following this passages may be read from other Tablets, from the Holy Scriptures of previous Dispensations, and from the writings of the Guardian. It is clear, however, that the beloved Guardian would not wish his own words to be read as part of an arranged devotional programme in which they would be interspersed among words of Holy Scripture. In other words, at the Nineteen Day Feast, where words of the Guardian are to be read they should follow any selections from the Scriptures and not be mixed with them. This does not mean, however, that subsequently in the Feast, any of these types of writings may not be read as suitable during the consultation. 

- The Universal House of Justice  (From letter of the Universal House of Justice to the Hands of the Cause of God, August 25, 1965: cited in a letter from the Universal House of Justice to an individual believer, October 15, 1972; compilation: ‘Lights of Guidance’)