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

Now Sarai, Abram's wife, bore him no children: and she had a handmaid, an Egyptian, whose name was Hagar. And Sarai said to Abram, Behold, now, the LORD hath restrained me from bearing: I pray thee go in to my maid; it may be that I may obtain children by her. And Abram hearkened to the voice of Sarai. And Sarai, Abram's wife, took Hagar her maid, the Egyptian, after Abram had dwelt ten years in the land of Canaan, and gave her to her husband Abram to be his wife.