As soon as His health permitted, Bahá’u’lláh began to teach
inquirers and to encourage and exhort the believers, and soon
peace and happiness reigned among the Bábís.
This, however,
was short-lived. Bahá’u’lláh’s half brother, Mírzá Yahyá, also
27
known as Subh-i-Azal, arrived in Ba
ghdád, and soon afterwards
differences, secretly instigated by him, began to grow,
just as similar divisions had arisen among the disciples of
Christ. These differences (which later, in Adrianople, became
open and violent) were very painful to Bahá’u’lláh, Whose
whole aim in life was the promotion of unity among the
people of the world.