The relationship between Israel and the church is a complex and controversial topic in Christian theology. One of the key issues is how to understand the mystery of Israel’s salvation, which Paul reveals in Romans 11:25-26. We will explore this mystery from a biblical perspective, focusing on three main aspects: the meaning of salvation, the role of Romans chapters 9-11, and the metaphor of the olive tree. I will also discuss how this mystery relates to the Abrahamic covenant and its fulfillment in the kingdom of God inaugurated by Jesus. Finally, I will conclude by defining and explaining a biblical covenant and summarizing the main points. 

Salvation is a broad term that encompasses God’s saving acts in history and eschatology. It includes both individual and corporate dimensions, as well as spiritual and physical aspects. Salvation is not only a matter of personal faith and forgiveness, but also of participation in God’s purposes for his people and his creation. Salvation is ultimately God’s gift of grace, not based on human merit or works, but on his sovereign choice and mercy (Rom 9:15-16). 

Romans chapters 9-11 are a crucial part of Paul’s argument in his letter to the Roman church. In these chapters, Paul addresses the question of Israel’s place in God’s plan of salvation. He affirms that God has not rejected his chosen people, but that a partial hardening has come upon them until the full number of the Gentiles come in (Rom 11:25). He also explains that God’s election is based on his promise, not on human ancestry or performance (Rom 9:6-13). He argues that God’s righteousness is revealed through the gospel of Christ, which is the power of God for salvation to everyone who believes, Jew and Gentile alike (Rom 1:16-17; 10:12-13). He shows that God’s purpose for Israel is to provoke them to jealousy through the Gentiles’ salvation, so that they may also obtain mercy (Rom 10:19; 11:11-14). He concludes that God has bound everyone over to disobedience so that he may have mercy on them all (Rom 11:32). 

The metaphor of the olive tree is one of the most vivid illustrations that Paul uses to describe the mystery of Israel’s salvation. In Romans 11:16-24, he compares Israel to a cultivated olive tree, whose natural branches have been broken off because of unbelief, and the Gentiles to a wild olive shoot, which has been grafted in among the remaining branches by faith. He warns the Gentiles not to be arrogant or boastful, but to stand by faith and fear, knowing that God can graft in the natural branches again if they do not persist in unbelief. He also expresses his hope that the natural branches will be grafted back into their own olive tree when they accept the gospel (Rom 11:23-24). 

The metaphor of the olive tree has several implications for understanding the mystery of Israel’s salvation. First, it implies that there is only one people of God, one olive tree, which consists of both Jews and Gentiles who believe in Christ. There is no distinction or separation between Israel and the church, but rather a continuity and unity based on faith (Gal 3:28-29; Eph 2:11-22). Second, it implies that there is still a future for ethnic Israel as a distinct entity within God’s people. The natural branches have not been permanently cut off, but can be restored if they repent and believe. God has not abandoned his promises to Abraham, Isaac and Jacob, but will fulfill them in Christ (Rom 11:28-29; 15:8-9). Third, it implies that there is a mutual dependence and interrelation between Israel and the Gentiles. The Gentiles owe their salvation to Israel’s rejection of Christ, which opened the door for them to enter God’s kingdom (Rom 11:11). The Gentiles are also called to provoke Israel to jealousy by their obedience and blessing (Rom 11:13-14). The Gentiles share in Israel’s spiritual heritage and blessings as adopted sons and daughters of Abraham (Rom 4:11-12; Gal 3:7-9). The Gentiles are also responsible to pray for Israel’s salvation and support their evangelization (Rom 10:1; 15:25-27). 

The mystery of Israel’s salvation is closely related to the Abrahamic covenant and its fulfillment in the kingdom of God inaugurated by Jesus. The Abrahamic covenant is the foundational covenant that God made with Abraham and his descendants, promising to make them a great nation, to bless them and to bless all the families of the earth through them (Gen 12:1-3; 15:1-21; 17:1-14). This covenant was confirmed and expanded through Isaac and Jacob, and later through Moses and David. It was also prophesied and anticipated by the prophets, who foretold the coming of the Messiah, the restoration of Israel and the ingathering of the Gentiles (Isa 2:1-4; 11:1-16; 49:1-13; Jer 31:31-34; Ezek 36:22-38; 37:15-28; Zech 8:20-23; Mal 3:1-4). 

The Abrahamic covenant is fulfilled in Christ, who is the seed of Abraham, the son of David, and the Lord’s anointed (Gal 3:16; Rom 1:3; Acts 2:36). He is the one who brings salvation to Israel and the Gentiles, who inaugurates the kingdom of God on earth, and who will consummate it at his second coming (Luke 1:68-79; 4:16-21; Acts 3:19-26; 28:23-31; Rev 11:15). He is also the mediator of a new covenant, which is based on his blood, his death and resurrection, and his gift of the Holy Spirit (Luke 22:20; Heb 8:6-13; 9:11-28; Acts 2:1-41). He is the one who fulfills the law and the prophets, and who reveals the true meaning and purpose of God’s will for his people (Matt 5:17-20; Rom 10:4; Col 2:16-17). He is also the one who grafts in the Gentiles into the olive tree of Israel, making them heirs of the promises and partakers of the blessings (Rom 11:17; Gal 3:14; Eph 3:6). 

A biblical covenant is a solemn agreement between God and his people, which involves promises, obligations, blessings and curses. It is based on God’s grace and faithfulness, but also requires human response and obedience. It establishes a relationship between God and his people, which is characterized by love, loyalty, trust and commitment. It also defines God’s purposes and plans for his people, which are revealed progressively throughout history. A biblical covenant is not a contract or a legal document, but a living and dynamic reality that shapes God’s people’s identity, mission and destiny. 

In conclusion, this article has explored the mystery of Israel’s salvation from a biblical perspective. It has shown that salvation is God’s gift of grace to both Jews and Gentiles who believe in Christ. It has examined Romans chapters 9-11 as a key text that reveals this mystery. It has analyzed the metaphor of the olive tree as a vivid illustration that describes this mystery. It has discussed how this mystery relates to the Abrahamic covenant and its fulfillment in Christ. And it has defined and explained a biblical covenant as a framework for understanding this mystery. The main points are: 

* The mystery of Israel’s salvation is that God has not rejected his chosen people, but will save them by his mercy when they accept Christ as their Messiah. 

* The mystery of Israel’s salvation is revealed in Romans chapters 9-11, where Paul affirms God’s sovereignty, righteousness and faithfulness in his plan of salvation for both Jews and Gentiles. 

* The mystery of Israel’s salvation is illustrated by the metaphor of the olive tree, which implies that there is only one people of God, one olive tree, consisting of both Jews and Gentiles who believe in Christ. 

* The mystery of Israel’s salvation is related to the Abrahamic covenant, which is fulfilled in Christ, who brings salvation to Israel and the Gentiles, who inaugurates the kingdom of God on earth, and who mediates a new covenant by his blood. 

* A biblical covenant is a solemn agreement between God and his people, which involves promises, obligations, blessings and curses. It establishes a relationship between God and his people, which is characterized by love, loyalty, trust and commitment.