21In those days, while Mordecai was sitting at the king’s gate, Bigthan and Teresh, two of the king’s eunuchs who guarded the entrance, grew angry and conspired to assassinate King Xerxes.
22When Mordecai learned of the plot, he reported it to Queen Esther, and she informed the king on Mordecai’s behalf.
— Esther 2:21-22