Paul, a servant of Christ Jesus, called to be an apostle, set apart for the gospel of God, 2 which he promised beforehand through his prophets in the holy Scriptures, 3 concerning his Son, who was descended from David according to the flesh 4 and was declared to be the Son of God in power according to the Spirit of holiness by his resurrection from the dead, Jesus Christ our Lord,5 through whom we have received grace and apostleship to bring about the obedience of faith for the sake of his name among all the nations, 6 including you who are called to belong to Jesus Christ, 7 To all those in Rome who are loved by God and called to be saints: Grace to you and peace from God our Father and the Lord Jesus Christ.
The gospel is of God. That means it comes from him. The idea of the good news of Jesus Christ – that Christ came and lived among us, that he suffered for our sins, that he died, was buried and rose again to life and now sits at the right hand of the Father – that is all from God.
John Stott says of the gospel of God:
So the Christian good news is the gospel of God. The apostles did not invent it; it was revealed and entrusted to them by God. This is still the first and most basic conviction which underlies all authentic evangelism. What we have to share with others is neither a miscellany of human speculations, nor one more religion to add to the rest, nor really a religion at all. It is rather the gospel of God, God’s own good news for a lost world. Without this conviction, evangelism is evacuated of its content, purpose and drive.
Paul was set apart for this gospel, but that is not just true of him, it is true of all believers. We have been set apart, separated from this world, so that we might be salt to those that have not come to place their trust in Christ. There are many things that salt can do, but one of those things is to make us thirsty, so if we are salt to this world are we acting in such a way that would make the world thirsty for Christ, or are we acting in a way that simply mimic the bland flavor of the world.
The message of the gospel is from God, given to us and we are all called, set apart to make it known – to a lost world. As Stott makes clear, this conviction is what out to be driving our desire to reach this world for Christ.