Now in Shushan … there was a certain Jew. Hitherto the narrative has been a mere story of the Persian court. Now at last a Jew is brought on the scene, very abruptly; and the history is to a certain extent attached to the other sacred books, and assigned its place, by the genealogy which follows.
Whose name was Mordecai. The name Mordecai must almost certainly be connected with that of Marduk, or Merodach, the Babylonian and Assyrian god. But it may have been given to his son by a Baby-Ionian Jew without any thought of its derivation or meaning, perhaps out of compliment to a Babylonian friend or master.
Another Mordecai, also a Jew, is mentioned by Ezra (Ezra 2:2) and Nehemiah (Nehemiah 7:7).