Genesis 21:9-11

International Children’s Bible

⁹ But Sarah saw Ishmael making fun of Isaac. (Ishmael was the son of Abraham by Hagar, Sarah’s Egyptian slave.) ¹⁰ So Sarah said to Abraham, “Throw out this slave woman and her son. When we die, our son Isaac will inherit everything we have. I don’t want her son to inherit any of our things.”

¹¹ This troubled Abraham very much because Ishmael was also his son.