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

December 15

This is the Day in which He Who held converse with God hath attained the light of the Ancient of Days, and quaffed the pure waters of reunion from this Cup that hath caused the seas to swell. Say: By the one true God! Sinai is circling round the Day Spring of Revelation, while from the heights of the Kingdom the Voice of the Spirit of God is heard proclaiming: “Bestir yourselves, ye proud ones of the earth, and hasten ye unto Him.” Carmel hath, in this Day, hastened in longing adoration to attain His court, whilst from the heart of Zion there cometh the cry: “The promise is fulfilled. That which had been announced in the holy Writ of God, the most Exalted, the Almighty, the Best-Beloved, is made manifest.” 
- Baha’u’llah  (‘Gleanings from the Writings of Baha’u’llah’)