In a thousand or more years another Manifestation will appear, under the shadow of Baha'u'llah, with clear proofs of His mission, but until then the words of Baha'u'llah, 'Abdul-Baha and the Guardian and the decisions of the International House of Justice constitute the authorities to which all believers must turn for guidance (130:2)

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Baha'u'llah & the New Era
J. Esslemont