
Sermon Idea: The promised new covenant is the fulfillment of God’s redemptive plan in Jesus Christ, the seed of the woman, who mediates a better covenant of grace.
Introduction: For I know the plans I have for you, declares the LORD, plans for welfare and not for evil, to give you a future and a hope. (Je 29:11)
These hopeful words from Jeremiah 29:11 are among the most frequently quoted verses in the entire Bible. You can find numerous high school and college graduation cards with these words engraved on the inside. They’ve been stitched or printed on the blankets of newborns. It is a popular verse featured on coffee cups, magnets, and T-shirts. It is the Old Testament equivalent to John 3:16.
Christians can read these words, apply them, and be blessed by them. The God of Abraham, Isaac, and Jacob, the God of Israel, is the God and Father of our Lord Jesus Christ. All of his words are good for us.
That said, we will benefit from them the most when we remember the context in which they are given.
The promise of Jeremiah 29:11 comes not at a time of celebration like that of a graduation or the birth of a newborn baby. They do not come as words of affirmation after the nation’s success and prosperity.
Far from it. These words come to God’s people in their lowest valley and their darkest hour.
When we last left off, God had covenanted with David and promised him an eternal kingdom, an eternal throne, and a descendant who would sit on that throne forever. God will fulfill these promises, but they will be fulfilled through a faithful and obedient king, one who is like a son to the Father.
The problem that follows is that unfaithful kings and unfaithful priests too often represented God’s people. There was a prosperous season under the reign of David’s son Solomon, who built the temple in Jerusalem. He, too, would fall, seduced by the false, foreign gods of his wives. Things get worse when Solomon’s son, Rehoboam, fails to listen to the concerns of the people, and the kingdom is divided into two. The northern kingdom maintained the name Israel, while the southern kingdom was known as Judah.
The kings in Israel did not lead faithfully, nor did the kings in Judah. To emphasize this point to the reader, a recurring theme is found throughout 1 Kings. The language isn’t always identical, but the fact is the same.
And he walked in all the sins that his father did before him, and his heart was not wholly true to the LORD his God, as the heart of David his father. (1 Ki 15:3)
He did what was evil in the sight of the LORD and walked in the way of his father, and in his sin which he made Israel to sin. (1 Ki 15:26)
The people need a faithful, righteous king. They need a faithful, righteous priest.
Both the northern kingdom and the southern kingdom fell into idolatry. They were covenant breakers and would feel the weight of the covenant curses.
In 722 B.C., the Lord raised up Assyria to conquer the northern kingdom (2 Kings 17:6-23) and take the people into exile.
In 586 B.C., the Lord raised up Babylon, which conquered the southern kingdom (2 Kings 25) and took the people into exile. Babylon not only took the people into exile, but also set fire to the king’s palace and destroyed the temple.
Where is God? What has happened? The kingdom is divided, Israel and Judah are in exile, and the temple has been destroyed.
This is the context in which God gives the famous words found in Jeremiah 29:11. Amid exile, grieving the consequences of their sin, God speaks hope into the darkness. God does know the plans He has for His people, and He will keep all of His promises. Israel and Judah will not be left in exile; instead, they will be reunited.
The word that came to Jeremiah from the LORD: “Thus says the LORD, the God of Israel: Write in a book all the words that I have spoken to you. For behold, days are coming, declares the LORD, when I will restore the fortunes of my people, Israel and Judah, says the LORD, and I will bring them back to the land that I gave to their fathers, and they shall take possession of it.” (Je 30:1–3)
Although this is good news, it is accompanied by even greater promises in the books of Isaiah, Ezekiel, and Jeremiah. Days are coming when God will not only restore His people, but also establish a new covenant that is different from the old covenant that the people broke. God’s people and the nations to be blessed through them need a covenant that they can’t break, an unconditional covenant, a covenant that can circumcise the heart rather than the flesh.
The first gospel promise subtly made in Genesis 3:15 is explicitly promised in Jeremiah 31. With the coming of the promised seed of the woman would come a new covenant.
The promised new covenant is the fulfillment of God’s redemptive plan in Jesus Christ, the seed of the woman, who mediates a better covenant of grace.
Next week, we will explore the fulfillment of the new covenant in Jesus Christ, but this morning, we want to reflect on the promise of the new covenant. To do that, we’ll reflect on the need for the new covenant, its newness, and the nature of the new covenant.
I.) The need for the new covenant (Jeremiah 31:31-32)
The text makes it clear that the new covenant is needed because Israel and Judah have broken the covenant God made with them.
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, 32 not like the covenant that I made with their fathers on the day when I took them by the hand to bring them out of the land of Egypt, my covenant that they broke, though I was their husband, declares the LORD (Je 31:31–32)
The old covenant was gracious in many ways, but it was not the covenant of grace. The nature of the old covenant can be summed up by the maxim, “Do this and live.” The blessings of the covenant were conditional on Israel’s obedience.
I am the LORD your God. 5 You shall therefore keep my statutes and my rules; if a person does them, he shall live by them: I am the LORD. (Le 18:4–5)
The perpetual problem throughout the Old Testament was not the Old Covenant itself, but rather the stubborn and rebellious hearts of the people, who struggled to keep the covenant. Since Adam’s fall into sin, the human heart has been dead and in bondage to sin. The Old Covenant does not address that problem because it was not designed to. It could not provide the inward change of a new heart.
What is needed is a covenant that can affect and change the people from within. They need a new covenant, to be circumcised in their heart rather than the flesh.
As Israel and Judah are suffering the consequences for their perpetual failure, God promises a covenant that will provide its members with the ability to keep it.
II.) The newness of the new covenant (Jeremiah 31:33-34)
Before we discuss how the new covenant is new, I would like to clarify that it is indeed a new covenant. It is not a renewal of a former covenant; it is new in substance. After the author of Hebrews quotes Jeremiah 31:31-34 in full in Hebrews 8, we are told that the old covenant is now obsolete.
In speaking of a new covenant, he makes the first one obsolete. And what is becoming obsolete and growing old is ready to vanish away. (Heb 8:13)
The Abrahamic, Mosaic, and Davidic covenants will find their fulfillment in what God will do in the New Covenant. What is it, then, that is new about the new covenant?
1. A Promised New Nature of God’s People
In the Old Testament, one became a member of the Old Covenant by being born and/or receiving the covenant sign of circumcision. It was based on natural, biological birth. The result was that the Old Covenant community was a mixed community. It was made up of faithful members who loved the Lord and believed his promises and others who were covenant members by birth and circumcision, but whose hearts were stubborn, rebellious, and far from the Lord.
The new covenant promises that every member will be a believing, faithful member whose heart has been changed to desire and be able to keep God’s law. God will write his law on the heart of every new covenant member. In other words, God will change the members of the new covenant within by His Spirit.
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. (Je 31:33)
This promise is similar to the one prophesied in Ezekiel 36, in which God promises to give His people a new heart of flesh.
And I will give you a new heart, and a new spirit I will put within you. And I will remove the heart of stone from your flesh and give you a heart of flesh. And I will put my Spirit within you, and cause you to walk in my statutes and be careful to obey my rules. (Eze 36:26–27)
This is none other than the promise of the new birth, the regenerative work of God by His Spirit to bring people from spiritual death to spiritual life. This is how one becomes a member of the new covenant community: by being born again through faith in Jesus Christ.
But to all who did receive him, who believed in his name, he gave the right to become children of God, who were born, not of blood nor of the will of the flesh nor of the will of man, but of God. (Jn 1:12-13)
2. A Promised New Structure of God’s People
Unlike the Old Covenant, every member of the New Covenant will know the Lord from the least to the greatest.
And no longer shall each one teach his neighbor and each his brother, saying, ‘Know the LORD,’ for they shall all know me, from the least of them to the greatest, declares the LORD. (Je 31:34)
This is significant because in the Old Covenant, the Spirit of God was not poured out on all the people. God put His Spirit on prophets, priests, and kings, but not on the entirety of the people in the covenant. So there was a difference in both access to God and knowledge of God under the Old Covenant.
In the New Covenant, God will pour out his Spirit on every member, so that they are born again and indwelt by the Spirit. Every member will have the same access and knowledge of God, because the Spirit of God will indwell every member. Knowledge of God will no longer be limited through the mediation of human prophets, priests, or kings, but all will know the Lord from the least to the greatest through the one mediator between God and man, Jesus Christ (1 Timothy 2:5).
These two points are essential for determining the proper participants of New Covenant signs of baptism and the Lord’s Supper. If the New Covenant is made up of born-again believers, it is not a mixed community. In that case, only professing believers should receive the New Covenant sign of baptism, and only baptized believers should partake of the covenant meal, the Lord’s Supper.
As Baptists, we believe in believer’s baptism not only because infant baptism is never described in the New Testament, nor is it ever prescribed, or commanded. Those are fine points, but the primary reason for believing in believer’s baptism is that the newness of the New Covenant demands it. In the New Covenant, you enter not by natural birth, but by the new birth, and only those born again should receive the New Covenant sign of baptism.
3. A Promised New Sacrifice for God’s People
In the New Covenant, the nature of God’s people is transformed. Hence, the structure of God’s people changes, and this is all possible because there is a new sacrifice for God’s people—a better sacrifice that definitively forgives sins.
And no longer shall each one teach his neighbor and each his brother, saying, ‘Know the LORD,’ for they shall all know me, from the least of them to the greatest, declares the LORD. For I will forgive their iniquity, and I will remember their sin no more. (Je 31:34)
I love the way Samuel Renihan explains the deficiency of the Old Covenant in dealing with sin.
“The Old Covenant had a sacrificial system that forgave sins in the context of Cannan. But the Old Covenant could not forgive sins in the court of heaven.”
As the author of Hebrews makes clear, For it is impossible for the blood of bulls and goats to take away sins. (Heb 10:4)
The better sacrifice is the sinless substitute, Jesus Christ. It is his one-time sacrifice that fulfills the entire sacrificial system that pointed to him in types and shadows.
And by that will we have been sanctified through the offering of the body of Jesus Christ once for all. And every priest stands daily at his service, offering repeatedly the same sacrifices, which can never take away sins. But when Christ had offered for all time a single sacrifice for sins, he sat down at the right hand of God, waiting from that time until his enemies should be made a footstool for his feet. For by a single offering, he has perfected for all time those who are being sanctified. (Heb 10:10–14)
From this better and perfect sacrifice come all the salvific blessings of the New Covenant—justification, regeneration, adoption, sanctification, and glorification—all of which are found in Jesus Christ, the mediator of the New Covenant.
And because of him you are in Christ Jesus, who became to us wisdom from God, righteousness and sanctification and redemption (1 Co 1:29–30)
The promised new covenant is the fulfillment of God’s redemptive plan in Jesus Christ, the seed of the woman, who mediates a better covenant of grace.
When we put all this together, we can say that the New Covenant is superior to the Old because…
- The New Covenant has a better mediator (Heb. 8:6)
- The New Covenant has a better sacrifice (Heb. 9:6-10)
- The New Covenant has better provisions (the Holy Spirit, Ezekiel 36:24-28)
- The New Covenant has better promises (a new heart, Ezekiel 36:24-28)
We’re now left to make one final observation: What is the nature of the new covenant?
III.) The nature of the new covenant
As we’ve studied the biblical covenants, I have made a point to emphasize both the unconditional and conditional elements of each one. Have you noticed what is missing from Jeremiah 31:31-34? There are no conditions. There is no “if you will.” Only, “I will.”
The New Covenant of Grace is freely offered to anyone who repents and believes in Jesus Christ. In the New Covenant, all the works needed have been provided by our faithful savior, Jesus Christ. He is the perfect, obedient Son, and because he fulfilled his mission in obedience to the Father, even to death on a cross, what is offered to us is grace, the grace of God in Jesus Christ.
For from his fullness we have all received, grace upon grace. For the law was given through Moses; grace and truth came through Jesus Christ (Jn 1:16–17)
For sin will have no dominion over you, since you are not under law but under grace. (Ro 6:14–15)
Jeremiah 31:31-34 is not the formalization of the New Covenant; rather, it is a promise of the New Covenant.
When Jesus broke the bread and lifted the cup with the twelve disciples, it was the New Covenant he was referencing that would be fulfilled by his death, burial, and resurrection when he said, “This is my body, which is given for you. Do this in remembrance of me.” And likewise the cup after they had eaten, saying, “This cup that is poured out for you is the new covenant in my blood. (Lk 22:19–20)
There are only two groups of people here this morning. Some need to remember the great grace of the New Covenant because they’re members of God’s people in Jesus Christ. Remember, reflect, and respond with gratitude. Others need to repent and believe in Christ for the forgiveness of their sins, reconciliation with God, and membership in the people of God under the New Covenant.
The promised new covenant is the fulfillment of God’s redemptive plan in Jesus Christ, the seed of the woman, who mediates a better covenant of grace.


