The big picture
The long-awaited birth of Isaac fulfills the promise to Sarah and Abraham. Celebration is followed by a painful separation from Hagar and Ishmael. A treaty over a well closes the chapter with Abraham still living as a resident outsider.
In this chapter
- Laughter Fulfilled Genesis 21:1-7
The Book of Genesis repeatedly stresses that the Lord does what he has spoken.
- God Hears the Boy Genesis 21:8-21
Conflict at Isaac's weaning leads to Hagar and Ishmael's departure.
- A Treaty at Beersheba Genesis 21:22-34
Abimelech recognizes God's presence with Abraham and seeks an oath.

Scripture beside the summary
Genesis · King James Version · 34Genesis 21:1-7
Laughter Fulfilled
The Book of Genesis repeatedly stresses that the Lord does what he has spoken. Isaac is born when Abraham is 100, receives the commanded sign and becomes a source of Sarah's joyful laughter. The child's arrival rests on God's faithfulness, not the household's flawless performance.

Deep dive
The opening doubles the connection between divine speech and fulfillment: the LORD acts as he had said and as he had spoken. The appointed time is repeated as well. After the delays and alternative arrangements of the preceding chapters, Genesis attributes the birth to the word that had specified both the mother and the time.
Abraham is one hundred. He was seventy-five when he left Haran, so the age notices place twenty-five years between that departure and this birth. The account has made those years visible through journeys, disputes, households, and successive promises. Isaac is not the quick conclusion of an isolated prediction.
The name and circumcision follow the earlier instructions. Sarah’s laughter now becomes something others can share with her: the woman who heard the announcement from inside the tent speaks openly about nursing a son in old age. Genesis does not erase the laughter of chapters 17 and 18. It gives that recurring sound another setting, turning the name already assigned to the child into a fitting accompaniment to his arrival.
Words to trace: Sarah, Abraham, born, Isaac, bare, laugh
Verse-by-verse path
- Genesis 21:1
“Visited” is paqad, the verb of Joseph’s dying words, “God will surely visit you” (50:24), and of the LORD visiting Hannah in 1 Samuel 2:21. It means to attend to someone, to come and act. The verse says it twice in two forms, “as he had said” and “as he had spoken”.
- Genesis 21:2
“In his old age” is lizqunav, the phrase that makes Joseph “the son of his old age” to Jacob in 37:3. God has spoken of the set time twice, in 17:21 and 18:14, and it is kept exactly.
- Genesis 21:3
The verse piles up claims on the child: his son, born unto him, whom Sarah bare, to him. After Ishmael, whose mother was never allowed to drop out of the record, Genesis leaves no doubt whose this son is. Abraham gives the name he was told to give in 17:19.
- Genesis 21:4
Isaac is the first child in Scripture circumcised on the eighth day, as 17:12 required. Stephen sums up the whole sequence in Acts 7:8: “and so Abraham begat Isaac, and circumcised him the eighth day.”
- Genesis 21:5
Abraham will die at a hundred and seventy five (25:7). So he lived seventy five years before leaving Haran, waited twenty five for this son, and has seventy five still to come after the birth.
- Genesis 21:6
“Made me to laugh” is literally “God has made laughter for me”, tsechoq, the noun. “Will laugh with me” is ambiguous in Hebrew and can equally mean “laugh at me”. Sarah’s laugh in 18:12 was denied; this one she owns.
- Genesis 21:7
“Would have said” is millel, a rare poetic verb, fitting the little song Sarah makes. “Children” is plural though she has one son. The Talmud (Bava Metzia 87a) told of neighbours who doubted the birth, and of Sarah nursing their infants too to silence them.
Genesis 21:1-7
King James Version1And the LORD visited Sarah as he had said, and the LORD did unto Sarah as he had spoken.
2For Sarah conceived, and bare Abraham a son in his old age, at the set time of which God had spoken to him.
3And Abraham called the name of his son that was born unto him, whom Sarah bare to him, Isaac.
4And Abraham circumcised his son Isaac being eight days old, as God had commanded him.
5And Abraham was an hundred years old, when his son Isaac was born unto him.
6And Sarah said, God hath made me to laugh, so that all that hear will laugh with me.
7And she said, Who would have said unto Abraham, that Sarah should have given children suck? for I have born him a son in his old age.
Genesis 21:8-21
God Hears the Boy
Conflict at Isaac's weaning leads to Hagar and Ishmael's departure. Their water runs out in the wilderness, and Hagar cannot bear to watch her son die. God hears the boy, renews the promise concerning him and opens Hagar's eyes to a well. The covenant distinction does not make their lives disposable.


Deep dive
The occasion is Isaac’s weaning, not his birth, and Abraham’s feast marks another stage in the child’s life. Sarah sees Hagar’s son mocking. Genesis does not describe the conduct in enough detail to reconstruct an assault, a threat to kill Isaac, or a particular speech. Sarah’s own explanation of her demand concerns inheritance: the two sons are not to inherit together.
Abraham’s grief is expressly connected with his son. The text does not portray Ishmael as an unwanted inconvenience to him. God’s answer nevertheless directs him to follow Sarah’s instruction and reaffirms that the promised line will be named through Isaac. The distinction concerns the continuation of the promise; it does not deny Ishmael’s relationship to Abraham.
That relationship becomes the stated basis for another promise: Ishmael too will become a nation because he is Abraham’s seed. Galatians 4:21–31 later uses the two sons and their mothers in an argument explicitly described as an allegory about bondage and freedom. Paul’s argument should be recognized as a later use of the passage, not substituted for the particular family conflict Genesis records.
The age notices matter here. Ishmael was thirteen at the circumcision in chapter 17, before Isaac’s birth; he is older still at Isaac’s weaning. The KJV’s use of “child” therefore does not require an infant, and the departure should not automatically be pictured as Hagar carrying a baby. The scene concerns a son overcome by the danger of the wilderness.
Hagar sits at a distance because she cannot bear to watch him die. Her weeping is recorded, but the declaration that follows concerns God’s hearing of the lad. The child named for divine hearing is heard in his own danger. The promise that he will become a nation is repeated at the point when his life appears about to end.
God opens Hagar’s eyes to a well; Genesis says that she sees it, not that the well has just been created. She fills the emptied bottle and gives her son water. The account then moves beyond survival: God is with him as he grows, and Hagar obtains an Egyptian wife for him. The separation from Abraham’s tents is not the end of divine presence or of his mother’s active place in his future.
Words to trace: Abraham, bondwoman, Isaac, grievous, Sarah, seed, water, bottle, child, Hagar, voice, wilderness
Verse-by-verse path
- Genesis 21:8
Children were weaned late, at two or three: the mother in 2 Maccabees 7:27 says she nursed her son three years, and Hannah keeps Samuel until he is weaned before bringing him to Shiloh (1 Samuel 1:24). Isaac has survived the years when most infants died.
- Genesis 21:9
“Mocking” is metsacheq, from the root of Isaac’s name, as if the son of Hagar were “Isaac-ing”. The same verb means sporting in 26:8 and playing at the golden calf in Exodus 32:6. Paul in Galatians 4:29 reads it as persecution; Genesis names only the laughing.
- Genesis 21:10
“Cast out” is garash, the verb used when God drove the man out of Eden in 3:24. Sarah does not use Hagar’s name or Ishmael’s, and in fact the name Ishmael does not appear anywhere in this chapter. Paul quotes this verse in Galatians 4:30.
- Genesis 21:11
“Very grievous” is literally “very evil in his eyes”. Genesis rarely records what Abraham feels; this is the first time he is said to be distressed. The cause is given in three words: “because of his son”. Ishmael is his son, and the verse calls him nothing else.
- Genesis 21:12
Abraham’s grief was for his son; God’s reply names the bondwoman as well, the woman Abraham’s distress left out. “Hearken unto her voice” is the phrase of 16:2, now a command. “In Isaac shall thy seed be called” is quoted in Romans 9:7 and Hebrews 11:18.
- Genesis 21:13
Ishmael is promised nationhood four times: to Hagar in 16:10, to Abraham in 17:20, to Abraham again here, and to Hagar in verse 18. The reason given here is his father: “because he is thy seed.”
- Genesis 21:14
The “bottle” is a chemet, a skin water bag. Bread and one skin of water is a thin provision from a man with flocks, servants and silver. The Hebrew can be read as putting the child on her shoulder too, though Ishmael is by now about sixteen.
- Genesis 21:15
“Cast” is hishlikh, the verb used when Joseph’s brothers cast him into the pit in 37:24. “Shrubs” is siach, the word of 2:5, “every plant of the field”, the scrub of the dry country.
- Genesis 21:16
“A bowshot” is literally “as those who draw the bow”, and the boy will grow up to be an archer (verse 20). She sits “over against him”, and the phrase is said twice. Lifting up the voice and weeping is how Genesis describes Esau in 27:38 and Jacob in 29:11.
- Genesis 21:17
This is the first call from heaven in Scripture. The next comes in 22:11, when the angel of the LORD calls to Abraham out of heaven over Isaac. Each son is saved at the edge of death by a voice from above. “Where he is” was read by the Talmud (Rosh Hashanah 16b) to mean: judged as he is now.
- Genesis 21:18
“Hold him in thine hand” is literally “make thy hand strong upon him”. The boy whose hand would be “against every man” (16:12) is first to be held up by his mother’s hand.
- Genesis 21:19
“Opened” is pakach, the verb of 3:7, when the eyes of Adam and Eve were opened, and of 2 Kings 6:17, when Elisha prays that his servant’s eyes be opened to see what was already there.
- Genesis 21:20
“God was with the lad” is the phrase Genesis uses of Joseph in Egypt, “the LORD was with Joseph” (39:2, 21, 23). “Archer” is roveh qashshat, a shooter of the bow, a skill for a man living on game in the desert.
- Genesis 21:21
Paran is the wilderness south of Canaan that Israel crosses in Numbers 10:12. With an Egyptian mother and now an Egyptian wife chosen by that mother, Ishmael’s household is Egyptian on both sides.
Genesis 21:8-21
King James Version8And the child grew, and was weaned: and Abraham made a great feast the same day that Isaac was weaned.
9And Sarah saw the son of Hagar the Egyptian, which she had born unto Abraham, mocking.
10Wherefore she said unto Abraham, Cast out this bondwoman and her son: for the son of this bondwoman shall not be heir with my son, even with Isaac.
11And the thing was very grievous in Abraham’s sight because of his son.
12And God said unto Abraham, Let it not be grievous in thy sight because of the lad, and because of thy bondwoman; in all that Sarah hath said unto thee, hearken unto her voice; for in Isaac shall thy seed be called.
13And also of the son of the bondwoman will I make a nation, because he is thy seed.
14And Abraham rose up early in the morning, and took bread, and a bottle of water, and gave it unto Hagar, putting it on her shoulder, and the child, and sent her away: and she departed, and wandered in the wilderness of Beer-sheba.
15And the water was spent in the bottle, and she cast the child under one of the shrubs.
16And she went, and sat her down over against him a good way off, as it were a bowshot: for she said, Let me not see the death of the child. And she sat over against him, and lift up her voice, and wept.
17And God heard the voice of the lad; and the angel of God called to Hagar out of heaven, and said unto her, What aileth thee, Hagar? fear not; for God hath heard the voice of the lad where he is.
18Arise, lift up the lad, and hold him in thine hand; for I will make him a great nation.
19And God opened her eyes, and she saw a well of water; and she went, and filled the bottle with water, and gave the lad drink.
20And God was with the lad; and he grew, and dwelt in the wilderness, and became an archer.
21And he dwelt in the wilderness of Paran: and his mother took him a wife out of the land of Egypt.
Genesis 21:22-34
A Treaty at Beersheba
Abimelech recognizes God's presence with Abraham and seeks an oath. Abraham raises a dispute over a seized well, and they settle it publicly. The tamarisk and invocation of the everlasting God locate worship within the practical realities of water, land and peaceful coexistence.

Deep dive
Abimelech acknowledges that God is with Abraham and asks him not to deal falsely with his family. After chapter 20, the request for truthful dealing has an edge. The king does not deny Abraham’s relationship with God, but neither does that relationship make an agreement about future conduct unnecessary.
Abraham then raises a wrong committed by Abimelech’s servants: the violent seizure of a well. The king denies prior knowledge. Genesis records both the complaint and the denial without supplying a hidden account that proves he had known all along. The issue is brought into the conversation while the covenant is being made.
The movement from promised nations to access to a water source is not a descent into irrelevant detail. A household with flocks must actually live in the land. Good relations require the acknowledgment of particular claims, not only gracious language. Abraham’s gifts and their mutual covenant place those claims within a public relationship between the two households.
The seven lambs are separated from the other animals, prompting Abimelech to ask their purpose. Abraham supplies the interpretation himself: accepting them will witness that he dug the well. The animals are not identified as a sacrifice, and their function should not be replaced by an invented sacrificial symbolism.
The place-name Beersheba is explained through the oath sworn there, with the seven lambs standing immediately beside that explanation. A concrete agreement has become something the landscape will remember. The well is claimed and the relationship formalized, but Abraham is still described as a sojourner.
He plants a grove and calls upon the LORD as the everlasting God. That title stands beside the closing notice of his temporary residence. The man has secured access to water and remained many days, but he has not become the permanent possessor of all that was promised. The agreement supplies a place to live without pretending that the whole promise has already arrived.
Words to trace: Abimelech, Abraham, swear, Abimelech’s, both, captain, Beer, lambs, seven, sheba
Verse-by-verse path
- Genesis 21:22
Phichol, the captain, appears again with an Abimelech in 26:26, in Isaac’s day: either a long-lived man or, more likely, a title passed down. “God is with thee” to Abraham stands two verses after “God was with the lad”.
- Genesis 21:23
“My son, nor my son’s son” is nin and neked, a rhyming pair meaning offspring and descendants, found again in Isaiah 14:22. “Kindness” is chesed, the word Abraham used in 20:13 for the deception he asked of Sarah; Abimelech uses it of his own conduct.
- Genesis 21:24
Abraham’s answer is two words in Hebrew, anokhi ishave’a. “Swear” is shava, from the same root as sheva, seven: to swear is, by its sound, to bind oneself by seven. The next verses turn on that.
- Genesis 21:25
The form of “reproved” can suggest a complaint made repeatedly. It is the verb of 20:16; the man who was rebuked in Gerar now rebukes the king. Wells will be fought over again in Isaac’s time, when the Philistines stop them with earth (26:15).
- Genesis 21:26
“I wot not” is 1611 English for I know not. The denial comes in three parts: I do not know who did it, you did not tell me, and I heard nothing until today.
- Genesis 21:27
Abraham, who was asked for the oath, is the one who brings the animals. This is the first covenant in Scripture made between two men rather than between God and a man, and “both of them” stresses that it binds each side.
- Genesis 21:28
The lambs are kivsot, ewe lambs, the future of a flock. The same word is the “one little ewe lamb” of Nathan’s parable in 2 Samuel 12:3. Setting them apart is a deliberate act meant to be noticed.
- Genesis 21:29
Abimelech’s question is the one a sign exists to provoke, like “What mean ye by this service?” in Exodus 12:26 and “What mean ye by these stones?” in Joshua 4:6. Abraham has staged it so that it will be asked.
- Genesis 21:30
The lambs are to be an edah, a witness, as Jacob and Laban’s heap of stones will be a witness in 31:48. “I have digged this well” is the claim, and in 26:18 Isaac re-digs his father’s wells and calls them by the names Abraham gave them.
- Genesis 21:31
Beer-sheba can mean “well of seven” or “well of the oath”, and the verse holds both, the seven lambs and the sworn oath. It becomes the southern limit of Israel’s land, “from Dan even to Beer-sheba” (Judges 20:1).
- Genesis 21:32
The Philistines are usually dated to the twelfth century BC, long after Abraham, so “the land of the Philistines” names the coastal region by the people later known there, as Dan was called by its later name in 14:14.
- Genesis 21:33
The “grove” is an eshel, a tamarisk tree; the King James follows older translations. Saul sits under a tamarisk in 1 Samuel 22:6 and is buried under one. A tamarisk is slow-growing and long-lived, so planting one is the act of a man expecting to stay. El Olam, “the everlasting God”, is heard here first.
- Genesis 21:34
“Many days” is left uncounted. The chapter ends as chapter 20 began, with Abraham sojourning, and the next chapter opens “after these things”, by which time Isaac is old enough to carry wood up a mountain.
Genesis 21:22-34
King James Version22And it came to pass at that time, that Abimelech and Phichol the chief captain of his host spake unto Abraham, saying, God is with thee in all that thou doest:
23Now therefore swear unto me here by God that thou wilt not deal falsely with me, nor with my son, nor with my son’s son: but according to the kindness that I have done unto thee, thou shalt do unto me, and to the land wherein thou hast sojourned.
24And Abraham said, I will swear.
25And Abraham reproved Abimelech because of a well of water, which Abimelech’s servants had violently taken away.
26And Abimelech said, I wot not who hath done this thing: neither didst thou tell me, neither yet heard I of it, but to day.
27And Abraham took sheep and oxen, and gave them unto Abimelech; and both of them made a covenant.
28And Abraham set seven ewe lambs of the flock by themselves.
29And Abimelech said unto Abraham, What mean these seven ewe lambs which thou hast set by themselves?
30And he said, For these seven ewe lambs shalt thou take of my hand, that they may be a witness unto me, that I have digged this well.
31Wherefore he called that place Beer-sheba; because there they sware both of them.
32Thus they made a covenant at Beer-sheba: then Abimelech rose up, and Phichol the chief captain of his host, and they returned into the land of the Philistines.
33And Abraham planted a grove in Beer-sheba, and called there on the name of the LORD, the everlasting God.
34And Abraham sojourned in the Philistines’ land many days.
Questions to keep in mind while reading
- Track who acts, who speaks, who is affected, and what changes.
- Notice repeated promises, failures, rescues, and consequences.
- Do not assume the account approves every action that is reported.
Text first
Where readers differ
The chapter summary begins with what the passage says and how its parts fit together. It does not assume one denomination has already settled every question. Where a conclusion depends on a tradition, literary theory, or historical reconstruction, that dependence is named openly.
The KJV text is presented first. Interpretive conclusions are labeled, and differences are introduced only when they help a reader understand why serious communities do not always reach the same answer.
Does Hagar's return command apply to every abused person?
Genesis 16 narrates a particular encounter with a particular woman and a promise concerning her son. It is not a general instruction that people suffering abuse must return to danger. The chapter calls attention to Hagar's affliction and to God seeing and hearing her.
Genesis 21 gives a further encounter in which Hagar and Ishmael are preserved outside Abraham's household. Read both scenes, retain her name and perspective, and do not use the promise to excuse Sarai's harsh treatment or Abram's surrender of responsibility.
Genesis 16:6-13 · Genesis 21:8-21
Questions beneath the surface
- What account of God, human freedom, responsibility, and the good life emerges from Genesis 21?
- Which tension does the chapter refuse to resolve quickly, especially around promise, power and vulnerability, peace?
- What changes when the chapter is read as part of the whole canon rather than as an isolated moral lesson?
- Where might a sincere reader confuse a familiar tradition with something the text states directly?
Questions for serious personal contemplation
These open-ended questions make room for tension, honest response, prayer, and conclusions that remain accountable to the chapter.
Observe without rushing
What part of Genesis 21 makes you stop, feel unsettled, or feel surprised, and why?
Which detail in the passage would be easiest to overlook? How does that detail change your understanding?
Where do you see tension between what happens and this focus: Isaac arrives, Hagar departs and a well is secured?
What important question does the passage leave open instead of resolving quickly?
Examine your inner life honestly
Which person, response, fear, or desire in the passage feels most like your own life right now?
What assumption about God, other people, or yourself does this text challenge?
Which part would you rather soften, avoid, or explain away too quickly? What might that reaction reveal?
If this Scripture could ask you one direct question, what do you think it would ask?
Respond with wisdom and courage
What do you need to remember, confess, grieve, thank God for, or trust after reading this passage?
How might another faithful person read this situation differently without ignoring the text?
What obedient response would be costly, uncomfortable, or slow, yet still faithful to Scripture?
What question will you carry into prayer this week, and which verses will you keep in front of you?
Music and video connected to the passage
Related media appears when its Scripture reference overlaps this study. Music and video can illuminate a theme while the biblical text remains the foundation.





