Of course prayer can be purely spontaneous, but many of the sentences and thoughts combined in Bahá’í writings of a devotional nature are easy to grasp, and the revealed Word is endowed with a power of its own.
(Shoghi Effendi, Lights of Guidance, p. 462)
The brief prayer which thou didst write at the close of thy letter was indeed original, touching and beautiful. Recite thou this prayer at all times.
(‘Abdu’l-Bahá, Selections from the Writings of ‘Abdu’l-Bahá, p. 66)