Genesis 16:1-3

Now Sarai, Abram’s wife had borne him no children, and she had an Egyptian maid whose name was Hagar. So Sarai said to Abram, “Now behold, the LORD has prevented me from bearing children. Please go in to my maid; perhaps I will obtain children through her.” And Abram listened to the voice of Sarai. After Abram had lived ten years in the land of Canaan, Abram’s wife Sarai took Hagar the Egyptian, her maid, and gave her to her husband Abram as his wife.