The verse highlights that mere biological descent from Abraham doesn't automatically qualify someone as a "child" of the promise. God's covenantal lineage was specifically established through Isaac, demonstrating that true spiritual inheritance is about God's deliberate choice, not just ancestry.
and not all are children of Abraham because they are his offspring, but “Through Isaac shall your offspring be named.” This means that it is not the children of the flesh who are the children of God, but the children of the promise are counted as offspring. For this is what the promise said: “About this time next year I will return, and Sarah shall have a son.”
English Standard Version (ESV)
Paul is arguing that God’s promises aren't automatically fulfilled based on physical descent, even from someone as pivotal as Abraham. He’s showing that from the very beginning, God distinguished between Abraham's natural offspring and those who would truly carry the promise, as seen in the crucial distinction made between Ishmael and Isaac. This sets the stage for his point that God’s selection isn't about lineage but about a sovereign choice that transcends human expectations.
When God makes a promise, it's easy to assume that His promises apply to everyone who is related by blood. But the Bible often reveals a deeper layer.
Paul is addressing a common Jewish pride: their physical descent from Abraham. They believed this lineage automatically made them God's chosen people. Paul counters this by saying that simply being Abraham's offspring doesn't make you a 'child' in God's eyes. The critical distinction comes from a specific promise God made.
God’s promises aren’t random; they are purposeful and often point to something specific. What made Isaac so special?
The verse highlights a pivotal moment in God’s covenant with Abraham. While Abraham had other sons, like Ishmael, God explicitly stated that the lineage through which His promises would be fulfilled – the line that would carry His name and eventually lead to the Messiah – would be through Isaac. This wasn’t about natural ability or merit, but about God’s sovereign choice and the unfolding of His redemptive plan.
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Abraham · Hebrew Noun
The patriarch of the Jewish people, regarded as the father of all who believe. God made a unilateral covenant with him that all nations would be blessed through his descendants.
sperma · Greek Noun
The biological descendants or lineage of a person. In theological contexts, it refers to the physical or spiritual heirs of a promise or covenant.
Yitshak · Hebrew Noun
The son of Abraham and Sarah through whom the covenant promise was established. His birth was miraculous, signifying that the covenant depends on God's initiative, not human effort.
sarx · Greek Noun
Referring to natural human birth, physical heredity, or sinful nature. It stands in contrast to the spiritual identity granted by grace or the Holy Spirit.
tekna Theou · Greek Noun
Those who have been born again or adopted into God's family through faith. They are characterized by relationship with God as their Father.
epangelia · Greek Noun
A divinely revealed assurance or declaration regarding God's future action. It is the basis for faith and is grounded in God's immutable character rather than human merit.
logizomai · Greek Verb
The act of being reckoned, designated, or declared as something. In salvation theology, it refers to being legally credited or justified by God based on faith.
Sarah · Hebrew Noun
The wife of Abraham, through whom the miraculous son of promise was born in her old age. She serves as a biblical model of faith and the fruitfulness of God's power.
The verse highlights a crucial distinction made early in Abraham's family, showing that not all physical descendants automatically inherit the promises. This principle of selection, evident from Isaac's birth over Ishmael's, helps Paul explain why not all ethnic Israelites are true 'Israel' in God's sight.
~1800 BC
God's Covenant with Abraham
God establishes a covenant with Abraham, promising him countless descendants and that through him all nations will be blessed.
~1800 BC
Birth of Ishmael
Abraham's son Ishmael is born to Hagar, Sarah's maidservant. Ishmael is Abraham's natural seed but not the child of the specific promise.
~1799 BC— this verse
God's Promise of Isaac
God reaffirms the covenant with Abraham and Sarah, promising them a son, Isaac, through whom the lineage of the chosen people will be traced.
~1784 BC
Abraham Sends Ishmael Away
At God's direction, Abraham sends Ishmael and Hagar away, further distinguishing Isaac as the sole heir of the covenant promises.
~1446-1406 BC
The Exodus and Law
The descendants of Abraham through Isaac and Jacob are delivered from slavery in Egypt and receive the Law at Mount Sinai, solidifying their national identity as Israel.
c. 586 BC
Destruction of Jerusalem
The Babylonians destroy Jerusalem and the Temple, exiling many Israelites. This event raises questions about God's faithfulness to His covenant promises.
This is the foundational promise Paul quotes, directly stating that Abraham's 'seed' would be named through Isaac, establishing the principle of a chosen lineage.
Galatians 3:16Paul echoes this same concept, emphasizing that the promises were made to Abraham and his 'seed,' which is Christ, further clarifying that it's not about mere physical descent but a divinely appointed line.
Galatians 4:28-30This passage directly contrasts the 'child of the flesh' (Ishmael) with the 'child of the promise' (Isaac), mirroring Paul's argument in Romans about how not all physical descendants are true spiritual children.
John 8:39Jesus confronts the Jews who claim Abraham as their father by stating that if they were truly Abraham's children, they would do what Abraham did, highlighting the disconnect between biological lineage and spiritual inheritance.
cambridgeRomans 9:7: "Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called."
7 . neither because , &c.] An illustration from manifest fact, to shew that an apparently inclusive promise may be limited. We may paraphrase: “Abraham’s descendants, again, are not all his ‘children’ in the sense contemplated , just because they are his descendants; on the contrary, there is a distinct limitation: ‘in Isaac and his line are they who shall bear the title o…
clarkeRomans 9:7: "Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called."
Neither because they are the seed of Abraham, etc. - Nor can they conclude, because they are the natural descendants of Abraham, that therefore they are all of them, without exception, the children in whom the promise is to be fulfilled. But, in Isaac shall thy seed be called - The promise is not confined to immediate natural descent, but may be accomplished in any part of…
The verse highlights that mere biological descent from Abraham doesn't automatically qualify someone as a "child" of the promise. God's covenantal lineage was specifically established through Isaac, demonstrating that true spiritual inheritance is about God's deliberate choice, not just ancestry.
Paul is arguing that God’s promises aren't automatically fulfilled based on physical descent, even from someone as pivotal as Abraham. He’s showing that from the very beginning, God distinguished between Abraham's natural offspring and those who would truly carry the promise, as seen in the crucial distinction made between Ishmael and Isaac. This sets the stage for his point that God’s selection isn't about lineage but about a sovereign choice that transcends human expectations.
Paul is arguing that God’s promises aren't automatically fulfilled based on physical descent, even from someone as pivotal as Abraham. He’s showing that from the very beginning, God distinguished between Abraham's natural offspring and those who would truly carry the promise, as seen in the crucial distinction made between Ishmael and Isaac. This sets the stage for his point that God’s selection isn't about lineage but about a sovereign choice that transcends human expectations.
"and not all are children of Abraham because they are his offspring, but “Through Isaac shall your offspring be named.” This means that it is not the children of the flesh who are the children of God, but the children of the promise are cou…" — The verse highlights that mere biological descent from Abraham doesn't automatically qualify someone as a "child" of the promise. God's covenantal lineage was specifically established through Isaac,…
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Last reviewed October 2026
