Meaning of "not all Israel is Israel"?
What does "not all who are descended from Israel are Israel" mean?

Setting the Scene

Romans 9 opens with Paul grieving over many ethnic Israelites rejecting Messiah.

• Verse 6 reassures: “It is not as though God’s word has failed. For not all who are descended from Israel are Israel”.

• The issue: How can God’s covenant promises remain sure when so many biological Israelites are unbelieving?


Two “Israels” in the Same Sentence

• “Descended from Israel” = physical lineage from Abraham, Isaac, Jacob.

• “Israel” (second use) = the spiritual family within that nation who truly belong to God by faith.

• God’s promises never rested on genetics alone; they always aimed at a faith-filled remnant.


Old Testament Echoes

Genesis 21:12—“through Isaac your offspring will be reckoned.” Ishmael was physically Abraham’s son, yet the promised line ran through Isaac.

Isaiah 10:20-22—A small “remnant” returns; covenant blessings focus on the faithful minority.

Hosea 1:10—Those once called “not My people” will be called “sons of the living God,” hinting that Gentile believers could be joined in.


Paul’s Immediate Illustrations (Romans 9:7-13)

1. Isaac vs. Ishmael—same father, different covenant standing.

2. Jacob vs. Esau—same parents, even same womb, yet God chose Jacob.

3. Conclusion: election and mercy, not ancestry, determine membership in the true Israel.


Connected New Testament Passages

Romans 2:28-29—“A man is not a Jew because of his appearance... but circumcision is of the heart, by the Spirit.”

Galatians 3:7—“Understand, then, that those who have faith are sons of Abraham.”

Philippians 3:3—“For we are the circumcision, who worship in the Spirit of God and glory in Christ Jesus.”

John 1:12-13—Children of God are “born not of blood... but of God.”


Key Truths Wrapped Up

• Covenant faithfulness: God’s word has not failed; it always aimed at a believing people.

• Divine sovereignty: God chooses whom He will bless, ensuring salvation rests on mercy, not merit.

• Human responsibility: Every descendant of Abraham is summoned to faith in Messiah; rejection excludes, belief includes.

• Gentile inclusion: By faith in Christ, non-Jews are grafted into the spiritual Israel (Romans 11:17-24).

• Ethnic Israel’s future: God still has purposes for national Israel (Romans 11:25-29); their eventual turning will display His unfailing promises.


Living Implications

• Examine: Is my confidence in heritage, rituals, or personal trust in Jesus?

• Rejoice: Salvation is secure because it rests on God’s promise and power, not on human pedigree.

• Welcome: The family of God embraces all who believe, Jew or Gentile, forming one redeemed Israel of God.

How does Romans 9:6 affirm God's faithfulness despite Israel's unbelief?
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