Baha'u'llah & the New Era by -J. Esslemont- 1 Para

"Each divine revelation is divided into two parts. The first part is essential and belongs to the eternal world. It is the exposition of Divine truths.. This is one in all religions, unchangeable and immutable. The second part is not eternal; it deals with practical life, transactions and business, and changes according to the evolution of man and the requirements of the time of each Prophet.. (123:1)

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