The Gospel is presented as a mystery, revealed both to Jews and Gentiles, believers and unbelievers through Christ Jesus and through his people (us).
We are one in Christ. The things that separate the world, race, gender, wealth, and position do not separate believers.
Through Christ, God frees us from who we were and sets us up to be His agents in this world.
Christ is Lord over all and God gives him dominion over all.
Paul sets up the argument that Christ is the focus of our salvation.