“Recite ye the verses of God every morn and eventide.” (Bahá’u’lláh, ‘The Kitáb-i-Aqdas’)

January 20

Intone, O My servant, the verses of God that have been received by thee, as intoned by them who have drawn nigh unto Him, that the sweetness of thy melody may kindle thine own soul, and attract the hearts of all men.... 
(Baha’u’llah, ‘Gleanings from the Writings of Baha'u'llah’; The Compilation of Compilations, Vol. II, Music)