Esther 2:19
"And when the virgins were gathered together the second time, then Mordecai sat in the king’s gate."
Cross References (ranked by relevance)
Esther 2:21
In those days, while Mordecai sat in the king’s gate, two of the king’s chamberlains, Bigthan and Teresh, of those which kept the door, were wroth, and sought to lay hand on the king Ahasuerus.
Esther 5:13
Yet all this availeth me nothing, so long as I see Mordecai the Jew sitting at the king’s gate.