Est Esther, chapter Book of Esther, chapter 6
And Haman recounted unto Zeresh his wife and all his friends every thing that had befallen him. Then said his wise men and Zeresh his wife unto him: 'If Mordecai, before whom thou hast begun to fall, be of the seed of the Jews, thou shalt not prevail against him, but shalt surely fall before him.' Pro 16:18