The book of Esther never mentions God's name, yet God clearly orchestrated all of its events. Esther, a Jew living among the exiles in Persia, became queen of the empire in about 480 b.c. Haman, a Persian official, sought to eradicate the Jewish minority, but God had prepared Esther "for such a time as this" (4:14) to save his covenant people. The book was written some decades later to document the origins of the Jewish observance of Purim, which celebrates Israel's survival and God's faithfulness. The author is unknown, but some believe it could have been Esther's cousin Mordecai, who is a key person in the book. Throughout the book we see God's sovereign hand preserving his people, showing that everything is under his control.