What is the new covenant?A Scripture-grounded answer about what is the new covenant
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The new covenant is God's promise to write his law on people's hearts, forgive their sins, and establish a permanent relationship with them through the sacrifice of Jesus Christ. Prophesied by Jeremiah and fulfilled by Christ, the new covenant replaces the old Mosaic covenant. At the Last Supper, Jesus took the cup and said, 'This cup is the new covenant in my blood.' The book of Hebrews argues extensively that the new covenant is superior to the old because it is founded on better promises, mediated by a better priest, and secured by a better sacrifice.
Why this answer? It starts with Jeremiah 31:33, then cross-checks Hebrews 8:6 and Luke 22:20 so the summary stays anchored in Scripture.
This answer explains the new covenant by connecting Jeremiah 31:33, Luke 22:20, forgiveness, law written on hearts, and better promises in Christ.
Deeper guideWhat Did Jesus Say About Communion?Connect Jeremiah's new covenant promise with Jesus' Last Supper words and sacrificial blood.Understanding What Is the New Covenant
Jeremiah 31:31-34 is the foundational prophecy: God will make a new covenant unlike the one Israel broke. Three features define it: internalized law (written on hearts, not stone), universal knowledge of God, and complete forgiveness of sins. Jesus inaugurated this covenant at the Last Supper (Luke 22:20), explicitly tying the cup to his blood. The book of Hebrews devotes chapters 7-10 to showing the new covenant's superiority: a permanent high priest (Jesus, after the order of Melchizedek), a once-for-all sacrifice (no more annual Day of Atonement repetitions), and access to God's presence for all believers (the veil is torn). The old covenant was not a failure — it was a tutor that pointed forward to what was coming.
Key Scripture
“For this is the covenant that I will make with the house of Israel after those days, declares the Lord: I will put my law within them, and I will write it on their hearts. And I will be their God, and they shall be my people.”
- Jeremiah 31:33
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Key Biblical Concepts
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