Hagar_(Bible) Hagar ( "Stranger", Standard Hebrew Hagar, Tiberian Hebrew ''Hajar), according to the Abrahamic faiths, was an Egyptian handmaiden of Sarah, wife of Abraham. At Sarah's suggestion, she became Abraham's second wife. Her story is reported in the Book of Genesis in Judeo-Christian tradition. In Islam, her story is mentioned in the Qur'an. She was the mother of Abraham's son, Ishmael, who is regarded as the patriarch of the Ishmaelites i.e. the Arabs.