And the thing was known to Mordecai,.... But by what means does not appear; the Jewish writers say , these two men were Tarsians, and spoke in the Tarsian language, which they thought Mordecai did not understand; but he, being skilled in languages, overheard them, and understood what they said; but, according to Josephus , it was discovered to him by Barnabazus, a servant of one of the chamberlains; the latter Targum says, it was showed unto him by the Holy Ghost:who told it unto Esther, and Esther certified the king thereof in Mordecai's name; whose name she mentioned, partly as a voucher of the truth of what she reported, and partly to ingratiate Mordecai to the king, that he might be still yet more promoted in due time.
T. Bab. Megillah, fol. 13. 2. Targum prius & Jarchi in loc. Antiqu. l. 11. c. 6. sect.