Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
LXX

Esther 3:7

And he made a decree in the twelfth year of the reign of Artaxerxes, and cast lots daily and monthly, to slay in one day the race of Mardochæus: and the lot fell on the fourteenth [day] of the month which is Adar.

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