Sara or Sarah, in the Bible, wife of Abraham and mother of Isaac. With Rebekah, Rachel, and Leah, she was one of the four Hebrew matriarchs. Her name was originally Sarai [Heb.,=princess]. She was childless until, by divine favor, she gave birth to Isaac in her old age. After his birth, jealous of her handmaid Hagar, who was Abraham's concubine, she drove Hagar and her son Ishmael into the desert to die. Sarah is said to have died in Hebron and to have been buried in the cave of Machpelah. The Sarah in the Book of Numbers is the same as Serah.