Open Hebrews 8:8 and you’ll find something startling. The author of Hebrews is quoting Jeremiah 31—God’s word about the new covenant. Listen to it:
“Behold, days are coming, says the Lord, When I will effect a new covenant With the house of Israel and with the house of Judah.”
A new covenant. With Israel? With Judah?
Wow!
Read that carelessly, and you might think God is making a promise exclusively to one ethnic people. But read it carefully—in light of what Paul says in Romans 9—and you discover something revolutionary: God was never making a covenant based on ethnicity in the first place.
What Romans 9 Actually Reveals
Paul is crystal clear: “Not all who are descended from Israel belong to Israel” (Romans 9:6).
Let that sink in. It’s not that Paul is inventing something new. He’s unveiling what was always true.
Even in the Old Testament, when God said He would make a covenant “with Israel,” He didn’t mean every person with Jewish ancestry. He meant the faithful remnant—those who believed Him. The prophets spent centuries confronting ethnic Israel because blood alone was never the basis of covenant membership. Abraham’s significance came from his faith, not his DNA. Isaac’s place in the promise came from faith, not genetics. Even among the twelve tribes, only those who believed actually belonged to the covenant people.
The remnant was always the real Israel.
The Covenant Was Always About Faith
Here’s what people often miss: When Jeremiah says God will make a new covenant “with the house of Israel,” he’s not contradicting Romans 9. He’s describing the same reality from a different angle.
In Jeremiah’s time, “Israel” was the ethnic container that held the faithful remnant.
God was saying: To those among you who believe, I will write My law on your heart. You will know Me directly. Your sins will be completely forgiven.
It was always an offer to the faithful.
Now jump to Hebrews 8. The author is saying: That promise in Jeremiah? That’s what Jesus fulfilled. He is the mediator of the new covenant. He wrote God’s law on human hearts through His Spirit. He gave access directly to God without priestly intermediaries.
But notice—the promise isn’t limited to ethnic Jews anymore. The container has expanded. The “house of Israel and house of Judah” now includes everyone, Jew or Gentile, who believes in Jesus.
Because the covenant was never contingent on ethnicity. It was always contingent on faith.
This Isn’t Antisemitism—It’s the Gospel
Some people worry that saying “Israel was defined by faith, not ethnicity” sounds anti-Jewish. It absolutely is not. In fact, the opposite is true.
Here’s why:
First, it’s biblical. This is what the text says. Period. We don’t get to soften Scripture to make it more palatable. Faithfulness to God’s word means saying what it says—ethnicity alone was never covenant membership.
Second, it honors Jewish identity. When Paul says “not all Israel is Israel,” he’s actually protecting what it means to be truly Jewish. He’s saying: Don’t reduce your faith to a tribal marker. Don’t think that being born into a Jewish family is enough. What makes you truly part of God’s people is faith in God’s word. That’s the honorable legacy of Abraham—not his genetics, but his trust.
Jewish believers in Jesus—from Peter and James and John all the way through the centuries to today—are the true remnant. They’re fulfilling what Israel was always meant to be: a people of faith.
Third, it means everyone belongs on equal footing. If covenant membership was based on ethnicity, then Gentiles would always be outsiders looking in. We’d be second-class. But if it’s based on faith, then a Gentile who believes in Jesus stands on exactly the same ground as a Jewish believer. No hierarchy. No “them” and “us.” One people, defined by faith.
That’s not anti-Jewish. That’s radical equality. That’s the gospel.
The Real Significance of the New Covenant
When Hebrews quotes Jeremiah—”a new covenant with the house of Israel and the house of Judah”—it’s not establishing a new ethnic boundary. It’s removing the old one.
Under the old covenant:
- You needed to be born into the covenant people. ✗
- You needed to keep Torah to maintain membership. ✗
- You needed the temple and priesthood to access God. ✗
- Gentiles were outside the camp. ✗
Under the new covenant:
- You enter by faith in Christ. ✓
- Your righteousness comes from believing God’s word, not keeping external law. ✓
- You access God directly through the Holy Spirit—no intermediaries. ✓
- Gentiles are full members, co-heirs with Jewish believers. ✓
This isn’t a replacement of Israel. It’s the fulfillment of what Israel was always meant to represent: a people whose hearts belong to God.
What God’s Plan Actually Was
Here’s the thing that blows people’s minds when they see it clearly:
Everyone in Christ was God’s plan from the beginning.
Not “we invented a plan B for Gentiles after Israel rejected Jesus.” Not “God was surprised and had to adjust.”
No. Abraham was promised that through his offspring all nations would be blessed (Genesis 12:3). God always intended for His covenant people to include the nations. The ethnicity of Israel was the temporary vehicle for that promise, not the final destination.
Paul spells this out in Galatians 3:
“The promises were spoken to Abraham and to his offspring. Scripture does not say ‘and to offsprings’ meaning many people, but ‘and to your offspring’ meaning one person, who is Christ. The covenant… cannot be annulled.”
Christ is the offspring. And those who belong to Christ—Jew and Gentile alike—are Abraham’s offspring. That was God’s plan all along.
From the very beginning, God’s heart was to create one people, drawn from every nation, united by faith in Him, walking in covenant blessing together.
Ethnicity was never the point. Faith was always the point.
For Gentiles: You Belong Here
If you’re a Christian who is not Jewish, receive this: You are not a guest in God’s kingdom. You are not an add-on to the “real” covenant people. You are a full member of the covenant that God made with Abraham, that was refined through the prophets, that was fulfilled in Christ.
Your faith in Jesus puts you in the exact same covenant relationship as Peter, as Paul, as every Jewish believer who has ever lived. You are seated at the same table. You inherit the same promises. You are a child of Abraham.
Not by genetics. By faith.
For Jewish Believers: You’re the Remnant
If you’re Jewish and you believe in Jesus, you are walking in the footsteps of your ancestors. You are the fulfillment of what the prophets hoped for. You are the faithful remnant that Isaiah spoke of, that Paul celebrated, that Jesus came to gather.
Your faith in the Messiah doesn’t take you out of your peoplehood. It completes it. It makes you truly Israel—not by tribal identity, but by believing God’s word.
For the Uncertain: The Door Is Open
If you’ve ever felt like you didn’t quite belong—maybe you’re not Jewish, maybe you’re confused about what it takes to be part of God’s people—here’s the bottom line:
Faith in Christ makes you part of the covenant people. That’s it. That’s the whole mechanism.
Not your background. Not your ethnicity. Not your family tree. Not how much religious law you keep.
Your faith. Your trust in God’s word. Your belief that Jesus is who He claimed to be and that His death and resurrection changed everything.
That’s the door. And it’s open to everyone.
Final Reflection
When the author of Hebrews quotes Jeremiah’s promise of a new covenant with Israel, he’s not quoting it to exclude anyone. He’s quoting it to include everyone who believes. The covenant promise didn’t change. The scope of who gets to enter it changed.
In Jeremiah’s day, you had to be born Jewish to be in the covenant people (with some rare exceptions). Now you don’t. The only requirement is faith.
This is good news for Jewish believers—it affirms that their faith is the true continuation of their heritage. It’s good news for Gentile believers—it means they’re not outsiders or second-class members. It’s good news for the human race—it means God’s covenant blessings are available to everyone, regardless of ethnicity or background.
And it’s not antisemitic. It’s the opposite. It’s saying that what makes you truly Jewish, what makes you truly part of God’s people, is not your DNA—it’s your faith. That honor belongs to believers.
God was never dividing the world between “ethnic Israel” and “everyone else.” He was always dividing the world between “those who believe” and “those who don’t.”
And in Christ, that division is open to all.
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