In his book, The King Jesus Gospel, Scot McKnight says that “one reason why so many Christians today don’t know the Old Testament is because their ‘gospel’ doesn’t even need it!”.
This is, in many ways, very true. Of course on the one hand, one should be able to present the message of the gospel to an unbeliever without delving into a long study of the Old Testament scriptures; on the other hand, there should be a natural flow from the Old Testament to the New. And one thing that is wrong is when we find no natural connection between our gospel presentation to the narrative of the Old Testament.
Paul himself tells us the gospel in 1 Corinthians 15:3, “that Christ died for our sins according to the scriptures, that he was buried, that he was raised on the third day according to the scriptures”. According to what scriptures? Well, the New Testament wasn’t completed yet, so we must assume that Christ died, was buried, and was raised according to the Old Testament scriptures! Scot McKnight says that the gospel then “is the Story of Jesus that fulfills, completes, and resolves Israel’s Story…God’s inscripturated and storied promises [found in the Old Testament] become a loud trumpet-like ‘Yes!’ in Jesus…”.
What McKnight is trying to explain is that when Jesus showed up, it was not out of the blue. He didn’t simply come out of nowhere to pay for the sins of mankind, and then fly up to heaven. Jesus came in the middle of a story that started in Genesis 3, and one that continued through Israel’s history, and climaxed in Jesus’ incarnation and crucifixion.
McKnight says that the story of Jesus, the gospel, brings the “story of Israel to its telos point, to its fulfillment, to its completion, or to its resolution”. In fact, McKnight will go so far as to say that the gospel message itself is the resolution of the story of Israel in Jesus’ life, death, and resurrection (and I think it goes further; that it is the story of Adam, Israel, and indeed all of humanity resolved in Jesus) — some clarification is needed.
God’s intention in creating mankind was that they be fruitful and multiply, and be God’s ikons. We were created to reflect and glorify God (1 Cor 10:31). However, Adam and Eve chose to rebel against God, consequently falling into a miserable state of sin and death. Humanity has found itself marred from that point on, under a curse, and born under the bondage of sin (Rom 6). From this point, God chose Abraham, and consequently Israel, as a nation that would bless the nations and bring God’s reign back on this earth (Gen 12-18). However, this chosen nation, the nation that was meant to bless the Gentiles, fell as well by choosing to worship other gods.
As a result, at the end of the Old Testament, we are left with a fallen humanity, and God’s chosen nation Israel just as lost. This is the context in which Jesus comes. And Jesus came for the purpose of restoring Adam’s fallen posterity, and to restore Israel to her original mission. This is why Paul says in Romans 15:8 that Jesus “became a servant of the circumcised (Israel) on behalf of God’s truth, to confirm the promises to the fathers, so that the Gentiles may glorify God”. He also said in Galatians 4:5 that Jesus came to redeem those “under the law (Israel), so that we (Gentiles) might receive adoption as sons”. Paul explicitly says that part of why Jesus came and died was to restore Israel from her fallen state, so that he might fulfill her purpose in blessing the Gentiles! Jesus’ mission was to fulfill Israel, and thereby bless the world! In this way, Jesus became the true Israel. Also, Paul calls Jesus the second Adam, saying that “through one man’s disobedience (Adam) the many were made sinners, so also through another man’s obedience (Christ) the many will be made righteous” (Rom 5:19). In this way, Jesus became a new Adam, the head of a new humanity.
And so when Jesus came to the earth, we find him in the midst of a broken humanity, and a lost nation Israel. And when he died on the cross, he bore the sins of Adam’s broken and sinful humanity on his back, that all peoples might be justified and saved by faith (Rom 3-5, Heb 2); and he bore the curse of the Law that in Him there might be a new spiritual Israel composed of both Jew and Gentile (Gal 3-4). Jesus did all this to become the last Adam and the true Israel, so that “the blessing of Abraham would come to the Gentiles by Christ Jesus” (Gal 3:14), and that he might “free those who were held in slavery all their lives by the fear of death…and make propitiation for the sins of the people” (Heb 2:15, 17), and that God the Father might sum up all things in Him (Eph 1:10). God accomplishes all of his cosmic purposes through Jesus. And the Old Testament finds its fulfillment through him. It’s all about Jesus!