Mírzá 'Alí Muhammad, known as the Báb (Gate), who in May 1844, at the age of twenty-five, claimed Himself the Herald come to prepare the way for the coming of "One greater than Himself" (Bahá'u'lláh). (Remember the relationship between John the Baptist & Christ.) Baha'is revere the Bab as a Manifestation of God and consider his writings are God's word revealed.