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Public-domain commentary
Matthew Henry
From his Commentary on the Whole Bible. Henry comments on passages, not single verses — this entry covers Genesis 21:9–13. His three-level outline is real structure in the source text, so it is rendered as structure.
The casting out of Ishmael is here considered of, and resolved on.
I.Ishmael himself gave the occasion by some affronts he gave to Isaac his little brother, some think on the day that Abraham made the feast for joy that Isaac was safely weaned, which the Jews say was not till he was three years old, others say five. Sarah herself was an eye-witness of the abuse: she saw the son of the Egyptian mocking (Gen 21:9), mocking Isaac, no doubt, for it is said, with reference to this (Gal 4:29), that he that was born after the flesh persecuted him that was born after the Spirit. Ishmael is here called the son of the Egyptian, because, as some think, the 400 years' affliction of the seed of Abraham by the Egyptians began now, and was to be dated hence, Gen 15:13. She saw him playing with Isaac, so the Septuagint, and, in play, mocking him. Ishmael was fourteen years older than Isaac; and, when children are together, the elder should be careful and tender of the younger: but it argued a very base and sordid disposition in Ishmael to be abusive to a child that was no way a match for him. Note,
1.God takes notice of what children say and do in their play, and will reckon with them if they say or do amiss, though their parents do not.
2.Mocking is a great sin, and very provoking to God.
3.There is a rooted remaining enmity in the seed of the serpent against the seed of the woman. The children of promise must expect to be mocked. This is persecution, which those that will live godly must count upon.
4.None are rejected and cast out from God but those who have first deserved it. Ishmael is continued in Abraham's family till he becomes a disturbance, grief, and scandal to it.
II.Sarah made the motion:
Cast out this bond-woman, Gen 21:10. This seems to be spoken in some heat, yet it is quoted (Gal 4:30) as if it had been spoken by a spirit of prophecy; and it is the sentence passed on all hypocrites and carnal people, though they have a place and a name in the visible church. All that are born after the flesh and not born again, that rest in the law and reject the gospel promise, shall certainly be cast out. It is made to point particularly at the rejection of the unbelieving Jews, who, though they were the seed of Abraham, yet, because they submitted not to the gospel covenant, were unchurched and disfranchised: and that which, above any thing, provoked God to cast them off was their mocking and persecuting the gospel church, God's Isaac, in its infancy, Th1 2:16, Note, There are many who are familiarly conversant with the children of God in this world, and yet shall not partake with them in the inheritance of sons. Ishmael might be Isaac's play-fellow and school-fellow, yet not his fellow-heir.
III.Abraham was averse to it: The thing was very grievous in Abraham's sight, Gen 21:11.
1.It grieved him that Ishmael had given such a provocation. Note, Children ought to consider that the more their parents love them the more they are grieved at their misconduct, and particularly at their quarrels among themselves.
2.It grieved him that Sarah insisted upon such a punishment. "Might it not suffice to correct him? would nothing less serve than to expel him?" Note, Even the needful extremities which must be used with wicked and incorrigible children are very grievous to tender parents, who cannot thus afflict willingly.
IV.God determined it, Gen 21:12, Gen 21:13.
We may well suppose Abraham to be greatly agitated about this matter, loth to displease Sarah, and yet loth to expel Ishmael; in this difficulty God tells him what his will is, and then he is satisfied. Note, A good man desires no more in doubtful cases than to know his duty, and what God would have him do; and, when he is clear in this, he is, or should be, easy. To make Abraham so, God sets this matter before him in a true light, and shows him,
1.That the casting out of Ishmael was necessary to the establishment of Isaac in the rights and privileges of the covenant: In Isaac shall thy seed be called. Both Christ and the church must descend from Abraham through the loins of Isaac; this is the entail of the promise upon Isaac, and is quoted by the apostle (Rom 9:7) to show that not all who come from Abraham's loins were the heirs of Abraham's covenant. Isaac, the promised son, must be the father of the promised seed; therefore, "Away with Ishmael, send him far enough, lest he corrupt the manners or attempt to invade the rights of Isaac." It will be his security to have his rival banished. The covenant seed of Abraham must be a peculiar people, a people by themselves, from the very first, distinguished, not mingled with those that were out of covenant; for this reason Ishmael must be separated. Abraham was called alone, and so must Isaac be. See Isa 51:2. It is probable that Sarah little thought of this (Joh 11:51), but God took what she said, and turned it into an oracle, as afterwards, Gen 27:10.
2.That the casting out of Ishmael should not be his ruin, Gen 21:13. He shall be a nation, because he is thy seed. We are not sure that it was his eternal ruin. It is presumption to say that all those who are left out of the external dispensation from all his mercies: those may be saved who are not thus honoured. However, we are sure it was not his temporal ruin. Though he was chased out of the church, he was not chased out of the world. I will make him a nation. Note,
(1.)Nations are of God's making: he founds them, he forms them, he fixes them.
(2.)Many are full of the blessings of God's providence that are strangers to the blessings of his covenant.
(3.)The children of this world often fare the better, as to outward things, for their relation to the children of God.
Historical interpretation
Four Centuries of Reception
2 surviving comments on this verse. Each one is dated, so this reads as a timeline rather than a list.
Select a marker to jump to its quote. Markers stagger vertically where authors wrote within a few decades of each other.
I say the truth in Christ, I lie not, my conscience also bearing me witness in the Holy Ghost, That I have great heaviness and continual sorrow in my heart. For I could wish that myself were accursed from Christ for my brethren, my kinsmen according to the flesh: Who are Israelites; to whom pertaineth the adoption, and the glory, and the covenants, and the giving of the law, and the service of God, and the promises; Whose are the fathers, and of whom as concerning the flesh Christ came, who is over all, God blessed for ever. Amen. Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel: Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called. [Genesis 21:12] That is, They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed. For this is the word of promise, At this time will I come, and Sara shall have a son. And not only this; but when Rebecca also had conceived by one, even by our father Isaac; (For the children being not yet born, neither having done any good or evil, that the purpose of God according to election might stand, not of works, but of him that calleth;) It was said unto her, The elder shall serve the younger. As it is written, Jacob have I loved, but Esau have I hated. What shall we say then? Is there unrighteousness with God? God forbid. For he saith to Moses, I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion. So then it is not of him that willeth, nor of him that runneth, but of God that showeth mercy. For the scripture saith unto Pharaoh, Even for this same purpose have I raised thee up, that I might show my power in thee, and that my name might be declared throughout all the earth. Therefore hath he mercy on whom he will have mercy, and whom he will he hardeneth.
Don’t object, he says, to what is said to you by her; instead, “whatever Sarah says to you, heed her.” Accept everything she now says to you about Ishmael and Hagar, and pay close attention. Don’t be ready to distress the woman who in all this period has given evidence of such great affection for you on more than one occasion so as to save you from death by surrendering herself for your welfare and proving the occasion of your wonderful prosperity. On the first occasion she caused you to leave Egypt with all that wealth, and later she was responsible for your being accorded remarkable esteem by Abimelech. So don’t allow yourself to follow a course of action contrary to what is advised by her; nor in fact will things turn out otherwise. You see, your descendants will be called after Isaac, the child born of her, and he will be your successor. “But this son of the maidservant I shall cause to become numerous; I shall make him grow into a mighty nation since he is your offspring.” So do what is said to you by her, and pay attention to her words.Consider now, I ask you, how great was the peace and harmony that all at once began to reign over their life together, God’s goodness strengthening their relationship. “He arose early next morning,” the text goes on, remember, “took bread and a bag of water, and gave them to Hagar; he then set the child on her shoulders and sent her off.” Notice once again, I ask you, the good man’s utterly correct attitude in giving evidence in every way of his godly purpose. I mean, when he heard Sarah’s words, “Send away the maidservant and her son,” it struck him as severe, since he was kindly disposed toward Ishmael. But when the Lord gave him orders, he immediately carried them out and gave no further thought to his natural affections. In other words, he said to himself, When it is he that commands, let all feelings take no further part; after all, the one who commands is the Lord of nature. “So the maidservant took the bread and the bag of water,” the text says, “and went off with her son.”
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Summary
Genesis 21:12 records God's direct instruction to Abraham to comply with Sarah's demand to send away Hagar and Ishmael, despite Abraham's profound distress over the decision. This divine command serves to unequivocally clarify that God's covenant promises and the designated lineage would continue exclusively through Isaac, thereby affirming the specificity of His sovereign plan for the promised "seed" and the unfolding of His redemptive purposes.
Context
Literary Context
This pivotal verse follows immediately after a period of great joy and celebration in Abraham's household: the birth and weaning of Isaac, the long-awaited son of promise. However, this joy is disrupted by Sarah's observation of Ishmael, Hagar's son, "mocking" Isaac during the weaning feast (Genesis 21:9). The Hebrew term for "mocking" (צָחַק, tsachaq) can also mean "playing" or "laughing," but in Sarah's perception, it was a challenge to Isaac's rightful place as heir. Her fierce protectiveness of Isaac, the child of promise, leads her to demand Hagar and Ishmael's expulsion (Genesis 21:10). This demand is "very grievous" to Abraham, as Ishmael is his firstborn son. God's intervention in Genesis 21:12 is therefore a direct response to this domestic crisis, providing divine clarity and authority to Sarah's seemingly harsh request, thereby resolving the conflict and setting the course for the covenant lineage.
Historical & Cultural Context
In the ancient Near East, the primary wife's barrenness often led to the practice of a surrogate, typically a maidservant, bearing children for the husband to ensure an heir. Such children, like Ishmael, were legally considered the child of the primary wife. However, the birth of a legitimate son from the primary wife (Isaac) fundamentally altered the household dynamics and the succession plan. The idea of a son born of a maidservant competing with the son of the freeborn wife for inheritance was a source of significant tension, often leading to the expulsion of the surrogate and her child. Furthermore, the weaning feast was a significant cultural event, marking a child's transition and often solidifying their status within the family. Ishmael's actions at this feast, regardless of their precise intent, were perceived by Sarah as a challenge to Isaac's position, reflecting the deep-seated cultural anxieties surrounding inheritance and lineage in patriarchal societies.
Key Themes
Genesis 21:12 contributes significantly to several overarching themes within the book of Genesis and the broader biblical narrative. Firstly, it powerfully underscores the theme of Divine Sovereignty and Election, demonstrating that God's promises are fulfilled not by human design or natural means, but through His specific, chosen instruments. The declaration "in Isaac shall thy seed be called" highlights God's exclusive choice of Isaac's lineage for the continuation of the covenant, even over Abraham's natural affection for Ishmael. Secondly, it reinforces the theme of Covenant Fidelity, showcasing God's unwavering commitment to the Abrahamic Covenant (Genesis 12:1-3). Despite human failings, impatience (Abraham and Sarah's attempt to have a child through Hagar in Genesis 16), and emotional turmoil, God ensures His promises are brought to pass precisely as He intended. Finally, the verse introduces the theme of Distinction in the Line of Promise, clearly delineating the specific lineage through which the redemptive plan will unfold, setting the stage for the future nation of Israel and ultimately, the Messiah.
Exposition and Analysis
God's address to Abraham in Genesis 21:12 is a pivotal moment, resolving a profound family crisis and reaffirming the divine covenant.
Key Word Analysis
From a primitive root meaning "to be broken up (with any violent action)," or figuratively, "to fear." In this context, it describes Abraham's deep emotional distress, pain, or displeasure at the thought of sending away Ishmael and Hagar. It highlights the profound personal cost of obedience to God's difficult command.
Meaning "laughter" or "mockery," this name is derived from the laughter of Abraham and Sarah when they first heard of the promise of his birth in their old age (Genesis 17:17 and Genesis 18:12). Here, his name becomes central to the divine declaration, signifying the son through whom God's promises will be fulfilled, despite the initial human incredulity.
From a root meaning "to sow," this term refers literally to "seed" but figuratively to "posterity" or "offspring." In the context of the Abrahamic covenant, "seed" carries immense theological weight, referring not merely to physical descendants but to the specific lineage through whom God's promises of land, nationhood, and blessing to all nations would be realized. Its use here emphasizes the chosen, covenantal offspring.
Verse Breakdown
"And God said unto Abraham"
This opening phrase immediately establishes the divine authority and directness of the command. God intervenes personally in Abraham's domestic affairs, underscoring the theological significance of the unfolding events.
"Let it not be grievous in thy sight because of the lad, and because of thy bondwoman"
God acknowledges Abraham's profound emotional turmoil and distress. The phrase "grievous in thy sight" (literally, "evil in your eyes") emphasizes Abraham's personal sorrow over the impending separation from Ishmael, his son, and Hagar, his bondwoman. God's instruction is not a rebuke of Abraham's feelings but a divine directive to set aside personal anguish for a higher, redemptive purpose.
"in all that Sarah hath said unto thee, hearken unto her voice"
This command is striking, as it elevates Sarah's seemingly harsh and emotionally driven demand to a divine imperative. It implies that Sarah, though acting out of human jealousy and protectiveness, was unwittingly aligned with God's sovereign plan for the covenant line. This underscores that God can use human actions, even those born of imperfection, to achieve His perfect will. Abraham is commanded to obey Sarah's specific instruction regarding Hagar and Ishmael.
"for in Isaac shall thy seed be called"
This is the theological lynchpin of the verse and the divine rationale for the difficult command. "Seed" (Hebrew: zeraʻ) refers to Abraham's offspring, particularly the inheritor of the covenant promises. "Shall thy seed be called" (Hebrew: yiqqare' l'kha zara') signifies more than mere naming; it denotes the establishment of identity, status, and recognition. It means that the true, designated descendants—the inheritors of the covenant blessings and the lineage through whom the Messiah would come—would be identified and established through Isaac. This divinely declared lineage explicitly excludes Ishmael from the primary covenant line, not diminishing his status as Abraham's son, but distinguishing the specific line of promise through whom God's redemptive plan would unfold.
Literary Devices
The passage employs several significant literary devices. Divine Intervention is paramount, as God directly intercedes in a human conflict, demonstrating His active role in the lives of His covenant people and His meticulous oversight of His promises. This intervention also highlights Emphasis, specifically on the lineage of Isaac. The repetition of "Isaac" and the direct declaration "in Isaac shall thy seed be called" underscores his unique and indispensable role in God's plan. There is also an element of Irony in God's command for Abraham to "hearken unto her voice" regarding Sarah's demand. Sarah's motives were human and perhaps flawed, yet her actions are divinely sanctioned, revealing how God can sovereignly align human will (even imperfect will) with His perfect purposes. This passage also contains Foreshadowing, as the clear demarcation of the "seed" through Isaac points forward to the precise lineage through which the Messiah would eventually come.
Theological and Thematic Connections
Genesis 21:12 profoundly illustrates God's absolute sovereignty over His covenant promises and the means by which they are fulfilled. It reveals that God's plan is not subject to human preferences, natural lineage, or emotional attachments, but is determined by His divine election. Abraham's obedience, though painful, demonstrates the nature of true faith: trusting God's wisdom and purpose even when it contradicts personal desires or conventional understanding. This verse sets a crucial precedent for understanding the exclusivity of the covenant line, distinguishing between natural descent and divinely chosen inheritance, a theme that resonates throughout biblical history. While God chose Isaac's line for the covenant, His compassion is also evident, as He promises to care for Ishmael as well (Genesis 21:13), demonstrating His broader mercy even outside the specific covenant of promise.
Reflection and Application
Genesis 21:12 offers profound lessons for believers today, particularly concerning trust, obedience, and God's sovereign plan. It reminds us that God's purposes often extend beyond our immediate understanding or comfort, sometimes requiring us to make difficult choices or embrace painful separations for a higher, divine objective. This passage challenges us to trust God's direction, even when it involves personal distress or counter-intuitive decisions that go against our natural inclinations or affections. It underscores the importance of God's specific promises and how He faithfully brings them to pass, often through unexpected or challenging means, demanding our complete reliance on His wisdom. For those facing difficult family situations, feeling torn between competing loyalties, or wrestling with God's seemingly hard commands, this verse offers solace that God sees, knows, and guides towards His ultimate, redemptive purpose, ensuring His will is accomplished.
Questions for Reflection
FAQ
Why did God command Abraham to send Ishmael away?
God commanded Abraham to send Ishmael away not out of a lack of love for Ishmael, but to clearly establish the covenant lineage through Isaac. The promise of the "seed" through whom all nations would be blessed was specifically designated for Isaac, making the separation necessary to define the unique and exclusive path of God's redemptive plan. This ensured that the covenant promises would be fulfilled precisely as God intended, through the son of promise, Isaac, rather than through human improvisation.
Does "in Isaac shall thy seed be called" imply Ishmael was not Abraham's son?
No, it does not imply Ishmael was not Abraham's son. God explicitly acknowledges Ishmael as Abraham's son and promises to make a great nation of him in Genesis 21:13. The phrase "in Isaac shall thy seed be called" clarifies that the covenant "seed"—the specific lineage through which God's promises would be fulfilled and the Messiah would ultimately come—would be identified and established through Isaac, distinguishing him as the heir of the divine promise and the primary line of redemptive history.
Was Sarah's demand to send Hagar and Ishmael away just?
While Sarah's demand arose from human jealousy, protectiveness, and perhaps a lack of faith, and appeared harsh from Abraham's perspective, God's command to "hearken unto her voice" indicates that her demand, despite its human origin, aligned with God's sovereign plan for the covenant lineage. It was not necessarily "just" in a purely ethical or compassionate sense from a human viewpoint, but it was instrumental in bringing about God's specific design for the promised "seed" and ensuring the purity of the Messianic line. God used Sarah's imperfect actions to accomplish His perfect will.
Christ-Centered Fulfillment
The declaration "in Isaac shall thy seed be called" finds its ultimate and profound fulfillment in Jesus Christ. The promise to Abraham was not merely about a multitude of physical descendants, but specifically about one unique "Seed" through whom all the families of the earth would be blessed (Galatians 3:16). Genesis 21:12 narrows the focus of this promise to Isaac's lineage, ensuring that the Messianic line would be preserved and clearly identified. This painful separation of Ishmael from the household of Abraham ultimately served a divine purpose: to safeguard the purity and specificity of the covenant line, pointing directly to Christ as the true and ultimate "Seed" who would inherit and fulfill all God's promises. As the true Son of Abraham and Son of God, Jesus Christ is the one through whom the spiritual "seed" of Abraham—all who believe—are called and receive the promised blessing of salvation and eternal life (Galatians 3:29). The exclusion of Ishmael from the covenant line foreshadows the spiritual truth that not all who are physically descended from Abraham are children of the promise, but only those who are "in Christ" (Romans 9:6-8).