'Month' in the Bible

Esther was taken to King Ahasuerus, to his {palace}, in the tenth month that is Tebeth in the seventh year of his reign.

In the first month, that [is], the month of Nisan, in the twelfth year of King Ahasurus, he cast pur--that [is], the lot--before the presence of Haman {for the day and for the month}, until the twelfth month, that [is], the month of Adar.

And the king's secretaries were called in the first month on the thirteenth day, and [a decree] was issued, according to all that Haman commanded, to the satraps of the king and to the governors who [were] over all the provinces, and to [the] officials of all the people, to each province according to [its own] script and to all people according to their own language; [it was] written in the name of King Ahasuerus and [was] sealed with the king's ring.

Letters [were] sent by couriers to all the provinces of the king to destroy, to kill, and to annihilate all the Jews, {both young and old}, women and children, on one day, the thirteenth day of the month, that [is] Adar, and to plunder their goods.

And the secretaries of the king were summoned at that time, in the third month, which [is] in the month of Sivan on the twenty-third [day], and [an edict] was written according to all that Mordecai commanded, to the Jews and to the governors and satraps and officials of the provinces from India to Cush--one hundred and twenty-seven provinces--each province according to its own script and to every people in their own {language}, and to the Jews in their own script and language.

in one day in all the provinces of King Ahasuerus, on the thirteenth [day] of the twelfth month, which is the month of Adar.

In the twelfth month, that [is] the month of Adar, on the thirteenth day, on which the edict of the king arrived and his law was enacted, on the day in which the enemies of the Jews had hoped to gain power over them but was overturned, [and] the Jews gained power against their enemies,

And the Jews were gathered who [were] in Susa, and on the fourteenth day of the month of Adar and they killed in Susa three hundred men, but they did not {touch} the plunder.

[This was] on the thirteenth day of the month of Adar. [They] rested on the fourteenth [day] and made it a day of feasting and joy.

Therefore the Jews in the rural [areas], living in the rural towns, made the fourteenth month of Adar a day of joy and feasting, a festive day of giving gifts to each other.

to impose on them to keep the fourteenth day of the month of Adar, and the fifteenth [day], {every year},

as the day that the Jews {found relief} from their enemies, and the month which changed for them from sorrow to joy, and from a mourning ceremony to a {festive day}; to make them days of feasting and joy, and giving gifts to each other and to the poor.