To me, one of the most damning things about Baha’i history is the way the family of Baha’u’llah repeatedly tore itself apart over the “Covenant” of the Faith. The first such split was between Baha’u’llah and his brother Mirza Yahya (Sub-i-Azal). Yahya had been appointed by the Bab to lead the Babi community, but after a few years it became increasingly clear to most Babis that Baha’u’llah was the better leader and so when he declared himself to be the one the Bab had foretold would come after him, most of the Babis promptly became Baha’is. Perhaps ALL of them might have done so if Mirza Yahya had not rejected Baha’u’llah. In the Kitab-i-Aqdas, Baha’u’llah condemned his brother for his alleged disloyalty.