Beha was God Himself.

According to this doctor, Beha was God Himself. He teaches that God did not manifest through the personality of Beha, as in the case of Jesus, but that He really was God, and that He will not come again during this cycle. We are all called upon to believe this, or else forever lose our chance of salvation.

(E.G. Browne, Materials for the Study of the Babi Religion, p. 117)