Jamieson, Fausset and Brown on Esther 8:5-6

5-6. reverse the letters devised by Haman ... to destroy the Jews--The whole conduct of Esther in this matter is characterized by great tact, and the variety of expressions by which she describes her willing submission to her royal husband, the address with which she rolls the whole infamy of the meditated massacre on Haman, and the argument she draws from the king's sanction being surreptitiously obtained, that the decree should be immediately reversed--all indicate the queen's wisdom and skill, and she succeeded in this point also.