What Is the New Covenant?​

A covenant is a solemn promise from God.

The Abrahamic covenant promised the seed, blessing, and inheritance of the land. The Davidic covenant promised the Messiah, the enduring throne, and the kingdom. The Mosaic covenant contained the sanctuary arrangement that represented the way into the Most Holy—a way Christ later opened in reality.

The new covenant was established by Jesus at the Last Supper.

He took the cup and said:

“This cup is the new covenant in my blood, which is poured out for you.” — Luke 22:20

The cup represented his blood, through which the covenant promise was established. Then, in the same discourse, Jesus explained the promise:

“I covenant with you, just as my Father has covenanted with me, for a kingdom, that you may eat and drink at my table in my kingdom and sit on thrones.” — Luke 22:29–30

The new covenant is therefore Christ’s promise of the elect's participation with him in the kingdom.

Jeremiah 31, quoted in Hebrews 8 and 10, describes what God accomplishes within those covenant people: He forgives their sins, makes them His people, teaches them to know Him, and writes His law upon their hearts.

But this law is not the Law of Moses transferred from stone tablets into the human heart. Jeremiah expressly says that the new covenant would be “not according to” the covenant made when Israel was brought out of Egypt. Hebrews declares that former covenant obsolete.

"It will not be like the covenant I made with their ancestors when I took them by the hand to lead them out of Egypt." — Jer 31:32

Christ identified the law governing the new covenant:

“A new commandment I give you, that you love one another; as I have loved you.” — John 13:34

This is the law of Christ—the law of self-sacrificing love.

The measure is no longer merely, “Love your neighbor as yourself.” The measure is now:

“As I have loved you.”

So the new covenant is not a renewed Mosaic covenant. It is the covenant established through Christ’s blood, governed by the law of Christ, and carrying the promise of kingdom participation with Him.

Jeremiah describes the people transformed by the covenant.

Hebrews explains the sacrifice that makes it possible.

Luke records Christ establishing it and declaring its promise: a place at his table, participation in his kingdom, and authority under His rule.