God revealed to the prophet Jeremiah that he was going to establish a new covenant with his people hundreds of years before Jesus came to fulfill that promise. The Hebrew word that is translated covenant, bᵉrîyth (ber-eethˊ) means a treaty or alliance. “This word is used to describe God’s making a covenant with humankind. It may be an alliance of friendship (Psalm 25:14). The covenants made between God and humans defined the basis of God’s character in the Old Testament” (H1285). God told Jeremiah:

“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 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. 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. 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.” (Jeremiah 31:31-34)

“This is one of the most important passages in the Old Testament and contains several specific aspects of the new covenant. It is a covenant with the whole, reunited nation of Israel, not the church, which is “grafted in” to Israel’s promised covenant (Romans 11:17-27). The realization of the covenant is based upon the full and eternal atonement secured by Christ’s death (cf. Matthew 26:26, 27, 1 Corinthians 11:24, 25; Hebrews 9:15), which is the only means by which God can forgive sins and remember them no more (Jeremiah 31:34). The covenant will be based on individual, personal knowledge of God (Jeremiah 31:33-34) and characterized by the indwelling of God’s Spirit (Ezekiel 36:26, 27; 37:14). It will be an everlasting, eternal covenant of peace, administered by the Prince of Peace who is in the line of David (Isaiah 9:6; 55:3; Ezekiel 34:23-25; 37:24-26)” (note on Jeremiah 31:31-34).

The first persons to receive the indwelling of the Holy Spirit after Jesus instituted the New Covenant (Matthew 26:26-29) were his disciples. After Jesus’ resurrection, it says in John 20:19-23, “On the evening of that day, the first day of the week, the doors being locked where the disciples were for fear of the Jews, Jesus came and stood among them and said to them, ‘Peace be with you.’ When he had said this, he showed them his hands and his side. The disciples were glad when they saw the Lord. Jesus said to them again, ‘Peace be with you. As the Father has sent me, even so I am sending you.’ And when he had said this, he breathed on them and said to them, ‘Receive the Holy Spirit. If you forgive the sins of any they are forgiven them; if you withhold forgiveness from any it is withheld.”

Hebrews 8 focuses on Jesus’ institution of the New Covenant, referring to it as a better covenant because it was “enacted on better promises” (Hebrews 8:6). Jeremiah 31:31:34 is referenced in this section of Scripture, and a comment is made about the Old Covenant being obsolete (Hebrews 8:13). Hebrews 7:18-19 explains that the objective of God’s covenants with mankind was to make it possible for us to have a relationship with him. The Old Covenant wasn’t able to do that because it didn’t provide a means for the forgiveness of sins. Hebrews 7:18-19 states, “For on the one hand, a former commandment is set aside because of its weakness and uselessness (for the law made nothing perfect); but on the other hand, a better hope is introduced through which we draw near to God.”

God described the New Covenant in Jeremiah 31:33-34, stating, “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. And no longer shall each one teach his neighbor and each his brother, saying, ‘Know the LORD,’ for they shall all know me, for the least of them to the greatest, declares the LORD. For I will forgive their iniquity, and I will remember their sin no more.” An individual, personal knowledge of God is only possible through the indwelling of the Holy Spirit. This transaction takes place at the time a person is regenerated by God or what Jesus referred to as being born again (John 3:3). God said in Ezekiel 36:26-27, “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.”

The New Covenant’s provision for forgiveness of sins was a central point of Jesus’ teaching and ministry. Paul emphasized this in his message of salvation to the Jews at Antioch. Paul stated:

And we bring you the good news that what God promised to the fathers, this he has fulfilled to us their children by raising Jesus, as also it is written in the second Psalm,

“‘You are my Son,
    today I have begotten you.’

And as for the fact that he raised him from the dead, no more to return to corruption, he has spoken in this way,

“‘I will give you the holy and sure blessings of David.’

Therefore he says also in another psalm,

“‘You will not let your Holy One see corruption.’

For David, after he had served the purpose of God in his own generation, fell asleep and was laid with his fathers and saw corruption, but he whom God raised up did not see corruption. Let it be known to you therefore, brothers, that through this man forgiveness of sins is proclaimed to you, and by him everyone who believes is freed from everything from which you could not be freed by the law of Moses. (Acts 13:32-39)

Paul used the term “good news” to describe his message about the New Covenant’s provision for forgiveness of sins. The Greek word that is translated good news, euaggelizo (yoo-ang-ghel-idˊ-zo) is where the English word evangelize comes from (G2097). An evangelist is someone who tells people about God’s provision for the forgiveness of sins.

Paul concluded his message of salvation with a declaration that the New Covenant’s forgiveness of sin could free a person from everything that you could not be freed from by the Old Covenant (Acts 13:39). Justification is to declare someone to be just as one should be, to pronounce right (G1344). Justification is bestowed by God on man through Christ and is the complete absolution from the consequences of our sin. Paul explained why God did this in his letter to the Romans. Paul stated, “For there is no distinction: for all have sinned and fall short of the glory of God, and are justified by his grace, as a gift, through the redemption that is in Christ Jesus, whom God put forward as a propitiation by his blood, to be received by faith. This was to show God’s righteousness, because in his divine forbearance he had passed over former sins. It was to show his righteousness at the present time, so that he might be just and the justifier of the one who has faith in Jesus” (Romans 3:22-26).