Esther 5:14

5:14 Then said Zeresh his wife and all his friends unto him, Let a gallows be made of fifty cubits high, and to morrow speak thou unto the king that Mordecai may be hanged thereon: then go thou in merrily with the king unto the banquet. And the thing pleased Haman; and he caused the gallows to be made.

Esther 7:8

7:8 Then the king returned out of the palace garden into the place of the banquet of wine; and Haman was fallen upon the bed whereon Esther [was]. Then said the king, Will he force the queen also before me in the house? As the word went out of the king’s mouth, they covered Haman’s face.

Esther 9:25

9:25 But when [Esther] came before the king, he commanded by letters that his wicked device, which he devised against the Jews, should return upon his own head, and that he and his sons should be hanged on the gallows.