Whoso layeth claim to a Revelation direct from God, ere the expiration of a full thousand years, such a man is assuredly a lying imposter.... Should a man appear, ere the lapse of a full thousand years -- each year consisting of twelve months according to the Qur'án, and of nineteen months of nineteen days each, according to the Bayan -- and if such a man reveal to your eyes all the signs of God, unhesitatingly reject him!
- Bahá'u'lláh (Cited by Shoghi Effendi in ‘The World Order of Bahá'u'lláh - Selected Letters’; The Compilation of Compilations vol. I, The Covenant)