Main focus of Esther is... Sovereign of God through History

The book of Esther show how God controls history through providence. There isn't a miracle in the book and the name of God isn't mentioned but at the same time, without anyone realizing that God is always in control of every single event in this world. The king mentioned in Esther favored Esther and Mordecai, spared all the Jewish people, made Mordecai the Prime Minister and hanged Haman on the gallows he build himself for the Jewish people and preserved the nation Israel. God governs the world (Isa. 40:22-24), the nations (Isa. 40:15-17), and us (Proverbs 16:9). Proverbs 20:24 A man's steps are directed by the LORD. How then can anyone understand his own way? Proverbs 21:1 The king's heart is in the hand of the LORD; he directs it like a watercourse wherever he pleases. Jeremiah 10:23 [ Jeremiah's Prayer ] I know, O LORD, that a man's life is not his own; it is not for man to direct his steps.