Sarai, Abram’s wife, hadn’t yet produced a child. She had an Egyptian maid named Hagar. Sarai said to Abram, “God has not seen fit to let me have a child. Sleep with my maid. Maybe I can get a family from her.” Abram agreed to do what Sarai said.

So Sarai, Abram’s wife, took her Egyptian maid Hagar and gave her to her husband Abram as a wife. Abram had been living ten years in Canaan when this took place. He slept with Hagar and she got pregnant. When Hagar learned she was pregnant, she looked down on her mistress.

“You decide,” said Abram. “Your maid is your business.” Sarai was abusive to Hagar and Hagar ran away.

An angel of God found her beside a spring in the desert; it was the spring on the road to Shur. He said, “Hagar, maid of Sarai, what are you doing here?” She said, “I’m running away from Sarai my mistress.”

Hagar gave Abram a son. Abram named him Ishmael. Abram was eighty-six years old when Hagar gave him his son, Ishmael. * * *

One day Sarah saw the son that Hagar the Egyptian had borne to Abraham, poking fun at her son Isaac. She told Abraham, “Get rid of this slave woman and her son. No child of this slave is going to share inheritance with my son Isaac!”

Abraham got up early the next morning, got some food together and a canteen of water for Hagar, put them on her back and sent her away with the child. She wandered off into the desert of Beersheba. When the water was gone, she left the child under a shrub and went off, fifty yards or so. She said, “I can’t watch my son die.” As she sat, she broke into sobs.

Meanwhile, God heard the boy crying. The angel of God called from Heaven to Hagar, “What’s wrong, Hagar? Don’t be afraid. God has heard the boy and knows the fix he’s in. Up now; go get the boy. Hold him tight. I’m going to make of him a great nation.”

The Family Tree of Ishmael

This is the family tree of Ishmael son of Abraham, the son that Hagar the Egyptian, Sarah’s maid, bore to Abraham.

Tell me now, you who have become so enamored with the law: Have you paid close attention to that law? Abraham, remember, had two sons: one by the slave woman and one by the free woman. The son of the slave woman was born by human plotting; the son of the free woman was born by God’s promise. This illustrates the very thing we are dealing with now. The two births represent two ways of being in relationship with God. One is from Mount Sinai in Arabia. It corresponds with what is now going on in Jerusalem—a slave life, producing slaves as offspring. This is the way of Hagar. In contrast to that, there is an invisible Jerusalem, a free Jerusalem, and she is our mother—this is the way of Sarah. Remember what Isaiah wrote: Rejoice, barren woman who bears no children, shout and cry out, woman who has no birth pangs, Because the children of the barren woman now surpass the children of the chosen woman. Isn’t it clear, friends, that you, like Isaac, are children of promise? In the days of Hagar and Sarah, the child who came from faithless plotting (Ishmael) harassed the child who came—empowered by the Spirit—from the faithful promise (Isaac). Isn’t it clear that the harassment you are now experiencing from the Jerusalem heretics follows that old pattern? There is a Scripture that tells us what to do: “Expel the slave mother with her son, for the slave son will not inherit with the free son.” Isn’t that conclusive? We are not children of the slave woman, but of the free woman.