Book of Esther
Another important feature of this book that has often been wondered about is that it never directly talks about God, worship, prayer, or sacrifice. This has made some people think the book is not as religious as other books. However, it is possible that the author purposefully did not say anything about God or anything religious to show more clearly that it is God who controls all the "unimportant" coincidences that are in the story and ends in saving the Jews.