Thematic Bible: Is sterile; gives her handmaiden, hagar, to abraham as a concubine

Now Sarai, Abram's wife, had given him no children; and she had a servant, a woman of Egypt whose name was Hagar. And Sarai said to Abram, See, the Lord has not let me have children; go in to my servant, for I may get a family through her. And Abram did as Sarai said. So after Abram had been living for ten years in the land of Canaan, Sarai took Hagar, her Egyptian servant, and gave her to Abram for his wife.