Thematic Bible: Her jealousy of hagar

Sarah saw the son of Hagar the Egyptian, whom she had borne to Abraham, mocking. Therefore she said to Abraham, "Cast out this handmaid and her son! For the son of this handmaid will not be heir with my son, Isaac." The thing was very grievous in Abraham's sight on account of his son. read more.
God said to Abraham, "Don't let it be grievous in your sight because of the boy, and because of your handmaid. In all that Sarah says to you, listen to her voice. For from Isaac will your seed be called. I will also make a nation of the son of the handmaid, because he is your seed." Abraham rose up early in the morning, and took bread and a bottle of water, and gave it to Hagar, putting it on her shoulder; and gave her the child, and sent her away. She departed, and wandered in the wilderness of Beersheba.

He went in to Hagar, and she conceived. When she saw that she had conceived, her mistress was despised in her eyes. Sarai said to Abram, "This wrong is your fault. I gave my handmaid into your bosom, and when she saw that she had conceived, I was despised in her eyes. Yahweh judge between me and you." But Abram said to Sarai, "Behold, your maid is in your hand. Do to her whatever is good in your eyes." Sarai dealt harshly with her, and she fled from her face.