Genesis 16:1-3 New Revised Standard Version (NRSV)
The Birth of Ishmael
16 Now Sarai, Abram’s wife, bore him no children. She had an Egyptian slave-girl whose name was Hagar, 2 and Sarai said to Abram, “You see that the Lord has prevented me from bearing children; go in to my slave-girl; it may be that I shall obtain children by her.” And Abram listened to the voice of Sarai. 3 So, after Abram had lived ten years in the land of Canaan, Sarai, Abram’s wife, took Hagar the Egyptian, her slave-girl, and gave her to her husband Abram as a wife.