Genesis Chapter 21 — The Birth of Isaac and the Covenant at Beersheba

In this chapter, Sarah gives birth to Isaac in her old age, Hagar and Ishmael are sent into the wilderness where God preserves them, and Abraham settles a treaty with Abimelech.

Fulfillment of PromiseDivine ProtectionCovenantsFamily Legacy

1The LORD visited Sarah as he had said, and the LORD did to Sarah as he had spoken.

2Sarah conceived, and bore Abraham a son in his old age, at the set time of which God had spoken to him.

3Abraham called his son who was born to him, whom Sarah bore to him, Isaac.*Isaac means “He laughs”.

4Abraham circumcised his son, Isaac, when he was eight days old, as God had commanded him.

5Abraham was one hundred years old when his son, Isaac, was born to him.

6Sarah said, “God has made me laugh. Everyone who hears will laugh with me.”

7She said, “Who would have said to Abraham that Sarah would nurse children? For I have borne him a son in his old age.”

8The child grew and was weaned. Abraham made a great feast on the day that Isaac was weaned.

9Sarah saw the son of Hagar the Egyptian, whom she had borne to Abraham, mocking.

10Therefore she said to Abraham, “Cast out this servant and her son! For the son of this servant will not be heir with my son, Isaac.”

11The thing was very grievous in Abraham’s sight on account of his son.

12God said to Abraham, “Don’t let it be grievous in your sight because of the boy, and because of your servant. In all that Sarah says to you, listen to her voice. For your offspring will be named through Isaac.

13I will also make a nation of the son of the servant, because he is your child.”

14Abraham rose up early in the morning, and took bread and a container 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.

15The water in the container was spent, and she put the child under one of the shrubs.

16She went and sat down opposite him, a good way off, about a bow shot away. For she said, “Don’t let me see the death of the child.” She sat opposite him, and lifted up her voice, and wept.

17God heard the voice of the boy.

18Get up, lift up the boy, and hold him with your hand. For I will make him a great nation.”

19God opened her eyes, and she saw a well of water. She went, filled the container with water, and gave the boy a drink.

20God was with the boy, and he grew. He lived in the wilderness, and as he grew up, he became an archer.

21He lived in the wilderness of Paran. His mother got a wife for him out of the land of Egypt.

22At that time, Abimelech and Phicol the captain of his army spoke to Abraham, saying, “God is with you in all that you do.

23Now, therefore, swear to me here by God that you will not deal falsely with me, nor with my son, nor with my son’s son. But according to the kindness that I have done to you, you shall do to me, and to the land in which you have lived as a foreigner.”

24Abraham said, “I will swear.”

25Abraham complained to Abimelech because of a water well, which Abimelech’s servants had violently taken away.

26Abimelech said, “I don’t know who has done this thing. You didn’t tell me, and I didn’t hear of it until today.”

27Abraham took sheep and cattle, and gave them to Abimelech. Those two made a covenant.

28Abraham set seven ewe lambs of the flock by themselves.

29Abimelech said to Abraham, “What do these seven ewe lambs, which you have set by themselves, mean?”

30He said, “You shall take these seven ewe lambs from my hand, that it may be a witness to me, that I have dug this well.”

31Therefore he called that place Beersheba,†Beersheba can mean “well of the oath” or “well of seven”. because they both swore an oath there.

32So they made a covenant at Beersheba. Abimelech rose up with Phicol, the captain of his army, and they returned into the land of the Philistines.

33Abraham planted a tamarisk tree in Beersheba, and there he called on the name of the LORD,‡LORD or GOD in all caps is from the Hebrew יהוה Yahweh except when otherwise noted as being from the short form יה Yah. the Everlasting God.

34Abraham lived as a foreigner in the land of the Philistines many days.

WEB Translation

Notable Verses

Genesis 21:1

The LORD visited Sarah as he had said, and the LORD did to Sarah as he had spoken.

This verse emphasizes God's faithfulness in fulfilling His specific promises at the appointed time.

Genesis 21:6

Sarah said, “God has made me laugh. Everyone who hears will laugh with me.”

This reflects the meaning of Isaac's name ('he laughs') and the joy surrounding his miraculous birth.

Genesis 21:33

Abraham planted a tamarisk tree in Beersheba, and there he called on the name of the LORD, the Everlasting God.

It shows Abraham's continued devotion and his recognition of God's eternal nature after establishing peace in the land.

Chapter Summary

Genesis 21 documents the fulfillment of God's long-standing promise to Abraham and Sarah as they welcome their son, Isaac, in their old age. Abraham follows God's command by circumcising Isaac on the eighth day. As the child grows, tensions arise between Sarah and Hagar, leading to the expulsion of Hagar and her son Ishmael into the wilderness of Beersheba. Though Hagar fears for their lives when their water runs out, God hears the boy's voice and provides a well of water, reaffirming His promise to make Ishmael a great nation. The latter half of the chapter details a diplomatic encounter between Abraham and King Abimelech. After resolving a dispute over a water well, the two men establish a covenant of peace. Abraham names the location Beersheba, meaning the 'well of the oath' or 'well of seven,' and worships the Lord as the Everlasting God.

Frequently Asked Questions

The name Isaac means 'he laughs.' This name is significant because both Abraham and Sarah laughed when God first promised them a son in their old age, and Sarah laughed again with joy when he was finally born.

Sarah saw Ishmael mocking Isaac during a celebration and insisted that Ishmael should not share in the inheritance with her son. Although Abraham was distressed, God told him to listen to Sarah, promising to protect and bless Ishmael as Abraham's offspring.

Beersheba was the site of a covenant between Abraham and Abimelech. It means 'well of the oath' or 'well of seven,' named after the seven ewe lambs Abraham gave to Abimelech as a witness that he had dug the well.

Study Note

The title 'El Olam' used in verse 33 is the first time in scripture God is specifically referred to as the Everlasting God.

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