In verses 8-12, Paul quotes from Jeremiah 31:31-34. The writer begins by telling us that God found fault with the men of old, and this leads to the quotation from Jeremiah 31 in Hebrews 8:8.
From the failures of the past, Jeremiah turned his vision to the future. There are four significant things prophesied by Jeremiah and quoted by Paul about the new covenant in verses 10-12:
First, the New Covenant is inward and dynamic: It is written on the hearts and minds of the people. A shortcoming of the Old had been its outwardness. It had divinely given laws, but it was written on tablets of stone. Jeremiah looked for a time when people would not simply obey an external code but would be so transformed that God's own laws would be written in their inmost beings.
Second, there is a close relationship between the God who will be "their God" and the people, he says, who will be "My people." The change from the Old Covenant to the New Covenant is that while the formula of the covenant remains the same from age to age, it is capable of being filled with fresh meaning to a point where it can be described as a "new" covenant. "I will be your God" acquires fuller meaning with every further revelation of the character of God.
Third, all who enter it will have knowledge of God. There will be no need for a person to instruct his neighbor. The word rendered neighbor in verse 11 means "citizen," and thus a "fellow-citizen." Jeremiah moves from the wider relationship in the community to the narrower relationship in the family, saying that in neither case will there be a need to exhort anyone to know God because everyone will know Him.
This does not mean that under the conditions of the New Covenant there will be no place for a teacher. There will always be the need for those who have advanced in the Christian way to pass on to others the benefit of their knowledge. Rather, the meaning is that the knowledge of God will not be confined to a privileged few (as with the priesthood of ancient Israel). All those under the New Covenant will have their own intimate and personal knowledge of their God.
Fourth, under the New Covenant, sins are forgiven. Following repentance of sins and acceptance of the sacrifice of Jesus Christ, sins are forgiven. The superior sacrifice of Christ is offered once and for all, paying the penalty of sin for those who repent.
Martin G. Collins
The Law's Purpose and Intent
Jesus is the Mediator of a better covenant, which is established upon better promises. It was not established upon law changes but upon better promises. Some changes of terms were made, but the focus is on changes in the promises. Why were the promises changed? Being in context with "for if that first covenant had been faultless" and "finding fault with them," the changes had something to do with the fault, and the fault was with them. Them is a plural reference to the multitude of people who anciently made the Old Covenant with God.
John W. Ritenbaugh
The Covenants, Grace, and Law (Part 10)
The author directly states that this idea is the primary reason for all he has written so far. Christianity is earth's only religion that is led by a spiritual High Priest sitting at the right hand of the throne of God in heaven. Within the material the author has written are two major points:
First, the qualifications of this towering Figure, who holds such an important office, make Him indispensable to the salvation of all God's sanctified ones. Indispensable? Absolutely! Jesus tells us Himself in John 15:5, “Without Me you can do nothing” in terms of producing fruit that glorifies God. He has much to offer. The epistle to the Hebrews identifies these qualities.
The second major reason is not named here. Some may consider it unimportant in comparison to the first. However, God, who knows precisely where His creation is headed and who sovereignly controls its direction and speed of advancement, never intended the Old Covenant to last forever.
Remember, God Himself publicly introduced the New Covenant six centuries before the writing of the book of Hebrews (Jeremiah 31:31-34). Its introduction within the flow of the history of the church and the world began to force key cultural changes to take place within Judea especially, but also in majority Gentile areas of the Middle East. Many Jews were being converted. Within the church itself, both the leadership and membership were asking many questions about what they needed to do to adjust to this new way of life. Those converts required direction from on high to secure them in living by faith in Jesus Christ.
The transition from Judaism to Christianity following Christ's crucifixion and resurrection and the church's receipt of the Holy Spirit—all in the early AD 30s—needed purposeful instruction from heaven to confirm to the church the direction that Christ wanted the daily, spiritual operations of Christianity to proceed. Just as the book of Leviticus contains detailed instruction for daily functions under the Old Covenant, so similar education was necessary under the New Covenant because of what God was working in the church—and is still working today.
The epistle to the Hebrews contains such instruction, enabling those who have entered the New Covenant with God to make the necessary adjustments to maintain their lives by faith and grow spiritually. In this way, they can glorify God by maintaining their relationship with Christ while preparing for the Kingdom of God.
John W. Ritenbaugh
Why Hebrews Was Written (Part One)
Many hold the mistaken belief that the New Covenant transforms living by faith and glorifying God into a far easier task than under the Old Covenant. “Easier” is an erroneous descriptor. Even though a convert is forgiven of past sins and receives wonderful gifts from God, including the Holy Spirit, the New Covenant also requires him or her to become a living sacrifice. Sacrificing one's life in humble submission to God is not easy, as the New Testament attests. Jesus lists some requirements in Luke 14:25-27:
Now great multitudes went with Him. And He turned and said to them, “If anyone comes to Me and does not hate his father and mother, wife and children, brothers and sisters, yes, and his own life also, he cannot be My disciple. And whoever does not bear his cross and come after Me cannot be My disciple.”
Almost all who call themselves Christian today hold the opinion that, through the New Covenant, God has made salvation much easier to obtain. The central pillar in their belief seems to be that since Jesus kept the laws perfectly, and since He paid for the forgiveness of our sins through His sacrifice, when one accepts Him as Savior, the convert's obligation to meet the New Covenant's demands is somehow magically reduced or even eliminated. People carelessly say, “Jesus did it all for me.”
In plain language, a high percentage of professing Christians accept as true that God's law is essentially done away. They believe that Jesus kept it for us. While that idea contains truth, it has been twisted into a misleading concept: that we need not be as concerned about keeping it as those who lived under the Old Covenant. Nothing could be further from the truth! Why? Our willing, devoted, and careful participation in keeping His law is absolutely necessary to be created in God's image!
The reality is that the New Covenant establishes what we might call graduate-level requirements of keeping God's law. However, God compensates for our weaknesses by providing the spiritual tools to reach those levels. Jesus did keep the commandments for our benefit, in that God is mercifully willing to accept His righteous life and death to pay our debt to Him for our sins because we do not have sufficient righteousness to pay the cost to have the death penalty removed.
But something is missing in people's misunderstanding of this reality, so their trust in it is also skewed. What is missing is what radio broadcaster Paul Harvey called “the rest of the story”: the truth that godly character is not imposed but built, created, with the willing and dedicated assistance of the person being transformed. The world's flawed conclusion dismisses the fact that God's creation of each person into His image is only just beginning at the individual's forgiveness and baptism into the church and the Family of God.
Anyone thinking of baptism should consider—if we have little need to be concerned about sin—why Jesus is so solemn and stern in His admonition in Luke 14:25-27 about His disciples following such high standards. Not being discussed at this point is that, despite Christ's wonderful gift in sacrificing Himself to pay our indebtedness to God, the reality is that the wages of sin, death, remain because the existence of the laws continues.
What we find is that God not only forgives us, but in our calling He also gives us the spiritual tools to fight and win the spiritual battles we engage in to keep sin from re-enslaving us. The fight against sin continues. God provides the tools for us to go on to perfection (Hebrews 6:1-2) if we will believe in them and use them.
John W. Ritenbaugh
Why Hebrews Was Written (Part One)
Other Forerunner Commentary entries containing Hebrews 8:6: