Born in Tehran, Iran on 12 November, 1817, Mirza Husayn-‘Alí —known as Bahá’u’lláh—was the great Divine Educator heralded by the Báb, the initiator of a new era in history in which the tyrannies and injustices of the past would give way to a world of peace and justice: an embodiment of the principle of the oneness of humankind.