Esther 2:21-22

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. {Bigthan: also called, Bigthana} {the door: Heb. the threshold} And the thing was known to Mordecai, who told {it} unto Esther the queen; and Esther certified the king {thereof} in Mordecai's name.