The book is meant to investigate the preaching of the gospel of God as Paul's mission to the nations in the letter to the Romans. The work begins with an explanation of the topic and its importance in the mission context, which sets the stage for the main body of the book. As evidence to this purpose, this work first explores the epistolary frame of the letter and contends that Paul basically had a missionary purpose for writing the Romans. The letter opening and closing affirm this divine commission and authority for preaching the gospel to all the nations. Paul skillfully establishes the universal significance of the gospel he was called to preach. Then it further examines God's identity in Paul's mission to the nations. God is the foundation and starting point for Paul's mission to the nations. Paul frequently uses descriptive statements regarding God's acts. He has made it plain that God's true identity is bounded by His actions for His people. These statements clearly demonstrate that the biblical God is not only the divine being, who encompasses divine attributes and nature. He is additionally the One who acts, which forms the distinct Christian identity of God, revealed fully and only in Jesus. This scholarly work further considers Paul's mission in the context of his missionary function. Paul was commissioned to preach the gospel, and-specifically-his call was to be an apostle to the gentiles; he was set apart for "the gospel of God." The gospel's authority lies with God, who owns it and originated it. The preaching of the gospel concerns God's Son, a promise God made in the Old Testament, which is now fulfilled in the incarnate, crucified, risen Christ. Paul's missionary calling was bringing the nations, both Jews and gentiles, together as one people of God by preaching the gospel. The ultimate goal of Paul's missionary task was joining the Jews and the gentiles in praise and worship of God. It is evident from this research that Paul's calling and commission were serving as a missionary to the nations. This calling was an integral part of God's redemptive plan, which was marked by the promise of blessing for the nations. Thus, Paul's worldwide mission underscores the Romans' purpose.