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

December 21

O kings of the earth! The Most Great Law hath been revealed in this Spot, this scene of transcendent splendor. Every hidden thing hath been brought to light, by virtue of the Will of the Supreme Ordainer, He Who hath ushered in the Last Hour, through Whom the Moon hath been cleft, and every irrevocable decree expounded.

Ye are but vassals, O kings of the earth! He Who is the King of Kings hath appeared, arrayed in His most wondrous glory, and is summoning you unto Himself, the Help in Peril, the Self-Subsisting. Take heed lest pride deter you from recognizing the Source of Revelation, lest the things of this world shut you out as by a veil from Him Who is the Creator of heaven. Arise, and serve Him Who is the Desire of all nations, Who hath created you through a word from Him, and ordained you to be, for all time, the emblems of His sovereignty. 
- Baha’u’llah  (‘Gleanings from the Writings of Baha’u’llah’)