A common misinterpretation is viewing this verse as an endorsement of divination or gambling, since lots were cast, but in context, it condemns Haman's wicked use of such pagan methods to perpetrate genocide against the Jews, not prescribing it as a legitimate practice for believers; another error is assuming the selection of Adar implies fate or luck controls events, ignoring the biblical theme that God overrules all such attempts, as seen in the eventual celebration of Purim which commemorates deliverance rather than defeat.
Esther 3:7
King James Version (1769)
7 In the first month, that is, the month Nisan, in the twelfth year of king Ahasuerus, they cast Pur, that is, the lot, before Haman from day to day, and from month to month, to the twelfth month, that is, the month Adar.
Esther 3:7 reveals Haman's superstitious reliance on casting lots, a pagan practice called 'Pur,' to select the twelfth month of Adar as the optimal date in the twelfth year of King Ahasuerus for exterminating the Jews, highlighting the arrogance of evil schemes against God's chosen people and setting the stage for divine intervention that will ultimately thwart this plot through Esther and Mordecai, demonstrating God's sovereignty over human machinations and chance.