I am aware that biblical accounts and secular history are not always easy to reconcile, and can often contradict each other at first sight. When this happens, the reaction is usually to defend either secular history, given its multiple contributors and sources, or the Bible, given its supposedly inerrant character.
I particularly like to believe in both sides, and I believe that there must always be some alternative for conciliation between the biblical and secular narrative, and so far this has been working, in the most of the time. But the book of Esther has been a challenge in itself.
Now it came to pass in the days of Ahasuerus, (this is Ahasuerus which reigned, from India even unto Ethiopia, over an hundred and seven and twenty provinces) [...]
– Esther 1:1 (KJV)
The King Ahasuerus (Ahashverosh, in the original hebrew) is usually related to King Xerxes (Khshayarsha in the original Persian language, being Ahashverosh the Hebrew transliteration of the name, based on the Babylonian Ahsiyarsu) and here we face a problem.
The Xerxes' queen is known and has a name, Amestris, which was together with Xerxes from the beginning of his reign, and continued to exert influence even after this. Another important piece of information is that she was the daughter of a Persian nobleman, Otanes, and is usually described as being notoriously cruel and vindictive. But this does not find any support when we compare it with the two queens mentioned in the book of Esther, that is, Esther herself and Queen Vashti.
In the third year of his reign, he [Ahasuerus] made a feast unto all his princes and his servants; [...] Also Vashti the queen made a feast for the women in the royal house which belonged to king Ahasuerus. [...]
– Esther 1:3a,9 (KJV)
Amestris could not be Vashti, since the latter only reigns for three years when she is replaced by Esther. Amestris also cannot be Esther, since the latter has Jewish origins and not in the Persian nobility, furthermore, the description of cruel and vindictive does not seem appropriate to what we see of Esther. So, how to combine these two sources?
I personally see that there can only be two possibilities, as I do not think it is valid to ignore secular history nor to dismiss Esther as a true and historical account. So, either Vashti and Esther were not really queens, being in fact just concubines, and the expression is just a mere hyperbole of the author, who perhaps considered Esther equivalent to a queen given her importance in history, or Ahasuerus cannot be Xerxes.
In the first hypothesis, in addition to having to assume a biblical error, albeit minimal, it seems strange to me that a concubine promotes a party in the name of the king, instead of the actual queen. Apart from that, Why would one concubine need to be replaced, when there are several others?
In the second hypothesis, it is important to highlight that the LXX translates Ahasuerus as Artaxerxes instead Xerxes, and although his queen is also known, Damaspia, nothing is known about her origins or duration of time when he was with Artaxerxes, except that their deaths occurred in the same year. This seems adequate to fit her into the biblical account, perhaps with Esther and Damaspia being different names for the same person. Perhaps this even justified Artaxerxes' benevolence towards the Jews by sending Ezra (Ezra 7:1-6), perhaps through the intercession of Esther.
However, as problems we have the fact that Artaxerxes (in Hebrew, Arkhshshsa) have a clear and distinct name of Ahasuerus (Ahashverosh) in the original Hebrew text, the two names are even mentioned at same time in the book of Ezra:
And in the reign of Ahasuerus, in the beginning of his reign, wrote they unto him an accusation against the inhabitants of Judah and Jerusalem.
And in the days of Artaxerxes wrote Bishlam, Mithredath, Tabeel, and the rest of their companions, unto Artaxerxes king of Persia; and the writing of the letter was written in the Syrian tongue, and interpreted in the Syrian tongue.
– Ezra 4:6-7 (KJV)
Here it is clearly evident that the two names refer to different people, however, the name Ahasuerus occurs another time in the book of Daniel, and here he seems to portray a totally different person:
In the first year of Darius the son of Ahasuerus, of the seed of the Medes, which was made king over the realm of the Chaldeans; [...]
– Daniel 9:1 (KJV)
This Darius, commonly referred to as "Darius the Mede" is generally related to Cyaxares II, supposed last Median king before the Persian conquest by Cyrus the Great. It is worth mentioning that its existence is controversial, and there are those who believe that the last Median king was Astyages, his father. Whichever of the two versions one considers, the fact is that neither of them had a father named Xerxes, which leaves room for the name Ahasuerus to have been used to refer to different kings.
A second problem, however, is Mordecai's age:
Now in Shushan the palace there was a certain Jew, whose name was Mordecai, the son of Jair, the son of Shimei, the son of Kish, a Benjamite; who had been carried away from Jerusalem with the captivity which had been carried away with Jeconiah king of Judah, whom Nebuchadnezzar the king of Babylon had carried away.
Esther 2:5-6 (KJV)
This deportation occurred during the second siege of Jerusalem, in 597 BC. Xerxes' reign began in 486 BC, which makes Mordecai at least over 114 years old in the events of Esther. If this already seems unlikely, it becomes impossible to reconcile when we consider Artaxerxes, who began to reign in 465 BC, making Mordecai over 132 years old. This obviously leads us to try to test the kings before Xerxes, and see if any of them provide any suitable scenario:
- Going back from there, we have Darius the Great, whose wife was none other than the daughter of Cyrus the great, eliminating him as a possibility.
- Bardiya was an impostor, and barely reigned just a few months, also discarded.
- Cambyses II was married to his sisters, and in other versions with Phaedymia, who coincidentally was the sister of Amestris, the Xerxes' wife. Also discarded.
- Finally, we come to Cyrus the Great, whose wife is not only well known, but Cyrus' importance to the Jews makes it unlikely that he would be referred to by any other name. The other Persian kings are completely out of the cogitation, for obvious reasons.
In the end, it seems to me that no alternative that can be proposed seems to solve the problem, how then can reconcile Esther with the known history?