Esther 1:14
And the next unto him was Carshena, Shethar, Admatha, Tarshish, Meres, Marsena, and Memucan, the seven princes of Persia and Media, which saw the king’s face, and which sat the first in the kingdom;)
Cross-reference
Esther 1:3
Parallel
In Esther 1:3, the same royal feast and princes are introduced; 1:14 specifies the seven wise men from that group.
Esther 3:1
Parallel
Esther 3:1 promotes Haman above all princes, including these seven — a narrative progression.
Ezra 7:14
Parallel
Ezra 7:14 also mentions the king's seven counselors, directly paralleling the seven princes who had access to Ahasuerus.