The second issue is that while most Baha'is don't know this 'Abdu'l-Baha's explanation that when Baha'u'llah said two wives in the Aqdas he secretly meant one is an explanation which was also retroactively applied to Islam's four wife limit by Shoghi Effendi:

"Concerning the question of plurality of wives among the Muslims: This practice current in all Islamic countries does not conform with the explicit teachings of the Prophet Muhammad. For the Qur'an, while permitting the marriage of more than one wife, positively states that this is conditioned upon absolute justice. And since absolute justice is impossible to enforce, it follows, therefore, that polygamy cannot and should not be practised. The Qur'an, therefore, enjoins monogamy and not polygamy as has hitherto been understood."

(From a letter written on behalf of the Guardian to an individual believer, January 29, 1939, in Lights of Guidance, no. 1672)

In light of this the justification of following the customs of his time even in regards to Islam is not true, since Shoghi Effendi argues Islam advocated for monogamy.

As such Baha'u'llah, according to Shoghi Effendi's commentary, did not understand the Qur'an or was disobeying it. Furthermore Baha'u'llah is meant to be the Almighty. The argument he HAD to follow custom and marry his first cousin certainly is not in keeping with the view he has command over all creation. Maybe one could argue as Baha'u'llah was superhuman he could uphold absolute justice this doesn't fit the facts, which are that in Israel Baha'u'llah lived with his cousin in an opulent Mansion while his first wife was kept in the city, and his third wife he abandoned in the Ottoman Empire for years before summoning her to join him in Israel.

As such the only REAL justification for Baha'u'llah having three wives is that he felt he could do whatever he wanted and that no rules applied to him. Not a trait one would expect in the source of all good in the world and a sign of hypocrisy given he was telling others to do as he said but not as he did. "God works in mysterious ways" indeed.

https://bahaism.blogspot.com/