As noted by biblical scholar Michael D. Coogan, the book contains specific details regarding certain subject matter (for example, Persian rule) which are historically inaccurate. For example, Coogan discusses an apparent inaccuracy regarding the age of Esther's cousin (or, according to others, uncle) Mordecai. In Esther 2:5–6, either Mordecai or his great-grandfather Kish is identified as having been exiled from Jerusalem to Babylon by King Nebuchadnezzar II in 597 BC: "Mordecai son of Jair, the son of Shimei, the son of Kish, who had been carried into exile from Jerusalem by Nebuchadnezzar king of Babylon, among those taken captive with Jeconiah king of Judah". If this refers to Mordecai, he would have had to live over a century to have witnessed the events described in the Book of Esther. However, the verse may be read as referring not to Mordecai's exile to Babylon, but to his great-grandfather Kish's exile.