In this fascinating piece of scholarly detective work, biblical scholar Savina J. Teubal peels away millenia of patriarchal distortion to reveal the lost tradition of biblical matriarchs. In Ancient Sisterhood: The Lost Traditions of Hagar and Sarah (originally published as Hagar the Egyptian), she shows that Hagar, the mother of Ishmael, was actually lady-in-waiting to the priestess Sarah and participated in an ancient Near Eastern custom of surrogate motherhood.