The position of Baha'u'llah among the Prophets is unprecedented and unique, because the condition of the world at the time of His advent was unprecedented and unique. By a long and checkered process of development in religion, science, art and civilization the world had become ripe for a teaching of Unity. The barriers which in previous centuries had made a world unity impossible were ready to crumble when Baha'u'llah appeared, and since His.. teachings began, these barriers have been breaking down in most astonishing fashion. (126:4)

In the days of the previous Prophets geographical barriers alone were amply sufficient to prevent world unity. (127:1)

Another great obstacle was the language difficulty. (127:2)

The third great obstacle was religious prejudice and intolerance. That to, is disappearing. Men's minds are becoming more open. The education of the people is passing more and more out of the hands of sectarian priests; and new and more liberal ideas can no longer be prevented from penetrating into even the most exclusive and conservative circles (127:3)

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