What is the New Covenant and how does it relate to Israel and the Church?

Question 10007.

The New Covenant is announced in Jeremiah with a named addressee, “the house of Israel and the house of Judah,” and yet the Lord Jesus lifted the cup and said, “this cup that is poured out for you is the new covenant in my blood,” to a table of Jewish disciples about to found the Church. So whose covenant is it? Israel’s? The Church’s? Both? This is one of the most debated questions in dispensational theology, and I want to give you the answer I am persuaded the texts require: the New Covenant is made with Israel, ratified in the blood of Jesus, and the Church today drinks from its spiritual blessings while Israel’s national fulfilment waits ahead.

What Jeremiah Actually Promised

Read the foundation text carefully: “Behold, the days are coming, declares the LORD, when I will make a new covenant with the house of Israel and the house of Judah, not like the covenant that I made with their fathers… my covenant that they broke” (Jeremiah 31:31-32). The provisions are staggering: the law written on hearts rather than stone; “I will be their God, and they shall be my people”; universal knowledge of the LORD “from the least of them to the greatest”; and the foundation of it all, “I will forgive their iniquity, and I will remember their sin no more” (Jeremiah 31:34). Ezekiel adds the mechanics: a new heart, a new spirit, “I will put my Spirit within you” (Ezekiel 36:26-27).

Notice two things. The parties are explicitly national: Israel and Judah, the very people who broke Sinai’s covenant. And the setting of the fulfilment passages is Israel’s future restoration: regathered to the land, cleansed, and dwelling securely. Jeremiah even attaches a guarantee: sooner will the sun and moon cease than “the offspring of Israel” cease from being a nation before God (Jeremiah 31:35-36). Whatever else we conclude, the New Covenant cannot be quietly rewritten to erase the addressee.

Ratified in One Cup of Blood

Now to the upper room. “This cup that is poured out for you is the new covenant in my blood” (Luke 22:20). The Greek word for covenant, diatheke, carries the sense of a binding disposition, and the language is sacrificial: covenants are ratified in blood (Exodus 24:8). At the cross, the New Covenant was cut. There is no second ratification coming, no different blood for Israel later; the death of Jesus is the once-for-all basis on which every New Covenant blessing, for anyone, ever, flows. Hebrews calls Him “the mediator of a new covenant” (Hebrews 9:15) and dedicates two chapters to showing His ministry “more excellent” than the old administration’s, quoting Jeremiah 31 in full (Hebrews 8:8-12).

So the covenant is ratified. The question is not whether it is in force but how its benefits are being distributed, and to whom, and when.

How the Church Relates to Israel’s Covenant

Here is the position I hold. The Church is not the named party of the New Covenant, but the Church participates in its spiritual blessings through union with the Mediator. Paul calls himself and his colleagues “ministers of a new covenant” (2 Corinthians 3:6); every communion service proclaims the covenant cup; and the blessings believers now enjoy, forgiveness, the indwelling Spirit, the law written within, are precisely Jeremiah’s and Ezekiel’s provisions. How can this be, if the covenant names Israel? Because the blessing strand of the Abrahamic covenant always intended world-wide reach, “in you all the families of the earth shall be blessed,” and this covenant is the channel of that blessing. The olive tree picture of Romans 11 holds it together: wild branches grafted in “now share in the nourishing root” (Romans 11:17), drawing sap from promises made to the patriarchs without becoming the natural branches. I explore the tree fully in Has the Church replaced Israel?.

What the Church does not receive are the covenant’s national clauses: the regathering to the land, the rebuilt and secure nation, every Israelite from least to greatest knowing the LORD. Those await the day Paul announces in Romans 11:26-27, when the Deliverer comes from Zion and “this will be my covenant with them, when I take away their sins,” quoting the New Covenant texts and placing their national fulfilment explicitly at the Second Coming. Zechariah paints the scene: “they will look on me, on him whom they have pierced,” and a fountain opened for sin (Zechariah 12:10; 13:1).

Why Not Just Say the Church Is the New Israel?

Because Scripture never does, and because the cost of saying it is the trustworthiness of God’s words. If “house of Israel and house of Judah” can mean a mostly Gentile body unknown to Jeremiah, then covenant language has no stable meaning and every promise becomes negotiable. Paul faces this exact challenge, “has God rejected his people?”, and answers with his strongest denial (Romans 11:1), insisting the gifts and calling are irrevocable (Romans 11:29). Note also the guarantee clause: Jeremiah staked the covenant’s integrity on Israel’s perpetuity as a nation. The sun still rises; the nation still exists; the clause still holds. The survival of the Jewish people through twenty-five centuries of empires that tried to end them is the New Covenant’s signature verifying itself in world history.

Equally, I refuse the opposite error of hyper-dispensationalism, which so walls off Israel’s covenant that the Church has no share in it at all and the communion cup becomes a puzzle. The Lord’s own words at the table settle that: the cup is the New Covenant in His blood, and He gave it to His Church to drink until He comes.

One Covenant, Two Horizons

So hold the two horizons together. Now: the covenant is ratified, its Mediator enthroned, its spiritual blessings flowing to everyone in Christ, Jew or Gentile, in the Church age. Ahead: its national horizon for Israel, when “all Israel will be saved” at the return of the King, the land clauses of the Land covenant honoured, and Jeremiah’s least-to-greatest knowledge of God realised in a converted nation. One covenant, one blood, two stages of distribution. This is not theological juggling; it is simply reading the cheque and the payment schedule as written.

And notice what the covenant’s heart says about God’s way with sinners in every age: “I will forgive their iniquity, and I will remember their sin no more” (Jeremiah 31:34). Not reformation from below but forgiveness from above; not resolutions written by us but a law written in us. The New Covenant is grace refusing to trust anything human, including human memory of sin.

The New Covenant and Your Daily Walk

Let me close the theology into practice, because this covenant is not a diagram; it is the actual basis of your Christian life this morning. Consider what its provisions mean for an ordinary Tuesday. The law written on the heart means that obedience is no longer an external code chafing against your nature but an internal inclination the Spirit is forming; when you find yourself wanting what God wants, you are experiencing a covenant clause in operation. The Spirit within means power is supplied, not just demanded: “I will put my Spirit within you, and cause you to walk in my statutes” (Ezekiel 36:27), causation from inside, grace doing what stone tablets never could. And sins remembered no more means your standing is not renegotiated after each failure; the covenant’s memory clause holds when your conscience does not.

This is also why the Lord’s Supper deserves more reverence than habit gives it. Each time the cup passes, the church is handling the ratification document of everything I have described: “this cup… is the new covenant in my blood” (1 Corinthians 11:25). We are not performing nostalgia; we are pleading and proclaiming a covenant presently in force, whose Mediator lives, whose blood still speaks better things than Abel’s, and whose national clauses for Israel are as certain as the spiritual clauses you enjoy. Take the cup as covenant people should: with examined hearts, with gratitude for clauses fulfilled, and with intercession for the people whose fuller morning is coming. Theology this good is meant to be drunk, not just diagrammed.

So, now what?

Next time you take the cup, know what you are holding: the ratified New Covenant, blood-sealed forgiveness, the Spirit’s indwelling, promises drawn from Israel’s well and handed to you by grace. Drink it with gratitude and without presumption, remembering the warning to grafted branches: “do not be arrogant toward the branches” (Romans 11:18). Pray for Israel’s salvation, since her covenant morning is still to dawn. And rest your conscience on the covenant’s deepest clause: sins remembered no more. If God has covenanted to forget, who are you to keep bringing them up? What would change this week if you believed His memory of your forgiven sin is truly closed?

“For I will forgive their iniquity, and I will remember their sin no more.” (Jeremiah 31:34, ESV)