Genesis 16:1-2 NKJV
Now Sarai, Abram’s wife, had borne him no children. And she had an Egyptian maidservant whose name was Hagar. So Sarai said to Abram, “See now, the LORD has restrained me from bearing children. Please, go in to my maid; perhaps I shall obtain children by her.” And Abram heeded the voice of Sarai.
NKJV: New King James Version