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

May 21

Say: O people! We, verily, summoned you, in Our former Revelation, unto this Scene of transcendent glory, this Seat of stainless sanctity, and announced unto you the advent of the Days of God. Yet, when the most great veil was rent asunder, and the Ancient Beauty came unto you in the clouds of God’s decree, ye repudiated Him in Whom ye had believed aforetime. Woe betide you, O company of infidels! Fear ye God, and nullify not the truth with the things ye possess. 
- Baha'u'llah  (‘The Summons of the Lord of Hosts’)