Genesis 21:9-19

But Sarah noticed the son of Hagar, the Egyptian, was mocking her son Isaac. So she said to Abraham, “Get rid of this slave woman and her son. Banish them, for the son of that slave woman must not become a coheir with my son Isaac!” Abraham was very upset over Sarah’s demand, for Ishmael was his son too. God spoke to Abraham, “Don’t be distressed over the slave woman and her son. Listen to every word Sarah says to you, and do it, for it will be through Isaac your promise of descendants will be fulfilled. Rest assured, I will make the son of your slave woman into a nation too, because he is your son.” Abraham rose up early the next morning, bundled up some food and a skin of water, and strapped them to Hagar’s shoulders. Then he gave her his son and sent them away. So, Hagar and her son Ishmael departed and wandered off into the wilderness of Beersheba. When the water was gone, she grew desperate, so she left her son under a bush. Then she walked about the distance of a bowshot and sat down, for she thought, “I can’t bear to watch my son die.” As she sat nearby, she broke into tears and sobbed uncontrollably. And God heard the voice of the boy. The angel of God called out to Hagar from the heavenly realm and said, “What’s the matter, Hagar? Don’t be afraid, for God has heard the voice of your son crying as he lies there. Get up! Help the boy up and hold him by the hand, for I will make him into a great nation.” Then God opened her eyes to reveal a well of water. She went over to the well and filled the skin with water and gave the boy a long, cool drink.