After Avram makes a covenant with God, we meet Sarah, then called Sarai, and learn that despite her advanced age, she has not been able to bear children. Discouraged, frustrated, she gives her servant, Hagar, to Avram as a wife and Hagar becomes pregnant and hostility and jealousy breaks out between Sarai and Hagar. Sarai treats Hagar harshly and Hagar flees.