Orson Scott Card, SF/military extraordinaire on....the women of Genesis?
Sarah - great book. read it.
Card does a great job of taking the characters and setting of Sarah's time and turning the stories we grew up with into a reality and a world with characters that we can relate to.
I definitely had my doubts going into this book given that
a) Card writes SF
b) Ender and Sarah have NOTHING in common and he did Ender GREAT
c) Card is very Mormon...I am very not
c.5) I already knew the stories according to my tradition
d) Some of his books are kind of depressing
I dont know how he managed it, but NONE of these were issues. In fact, you probably wouldnt enjoy the book as much if you dont already know the main bible/stories around Sarahs time (Egypt as Abraham's sister, Sodom and Gemorrah, Hagar/Ishmael, the binding of Isaac, etc).
That being said, this book NEEDS to be read as fiction, or historical fiction (biblical fiction?). Card took some liberties as the author, and some parts dont line up with ANYONE's version of the Bible. But with that in mind, the book is a very enjoyable read.

