Esther 9:29
Then Esther the queen, the daughter of Abihail, and Mordecai the Jew, wrote with all authority, to confirm this second letter of Purim.
Cross-reference
Esther 9:20
Historical context
In Esther 9:20, Mordecai first wrote to establish Purim; here Esther's letter confirms and expands that decree.
Esther 3:15
Contrast
Esther 3:15 describes the earlier decree that brought confusion — a contrast showing Purim reverses that doom.
Esther 8:10
Historical context
In Esther 8:10, Mordecai sent royal letters under the king's seal; here Esther writes with authority to confirm Purim, echoing that authorized correspondence.