For I am not ashamed of the gospel of Christ, for it is the power of God to salvation for everyone who believes, for the Jew first and also for the Greek. 17 For in it the righteousness of God is revealed from faith to faith; as it is written, “The just shall live by faith.” — Romans 1:16, 17.
Paul’s bedrock and springboard conviction is that the gospel is the ‘power of God to salvation’ to everyone who believes. This is true for Jews and Greeks (standing for Gentiles). The gospel is to do with Christ’s righteousness and faith in Him that enables a Christian to live spiritually and eternally. [Source: The Bible Panorama.]