While at Bahjí, Bahá’u’lláh elucidated His teachings and sent tablets to various parts of the world. They included references to His most pivotal social teaching — the oneness of humankind. All His other social teachings are means of achieving and sustaining the practical unity of humanity so that people may fulfill the purpose of their creation, to peacefully carry forward an ever-advancing civilization.
Bahá’u’lláh renewed the great spiritual teachings found in earlier religions, foremost among which is the need to recognize the Messenger of God in the era in which He appears, and follow His teachings.