This brief passage at the beginning of the fourth chapter of Ephesians is like the hinge on a diptych. In chapters one to three, Paul has laid the foundation for our calling or election by God into the covenant with Christ that overcomes the barrier between Jew and Gentile. In chapter four he will focus on the structure and the ministries of the church which is Christ's Body. Chapter 4:1-6 at once sums up and propels us forward, from our faith in the one God known in Trinity to our unity with one another.