There is one body and one Spirit--just as you were called in one hope when you were called--one Lord, one faith, one baptism, one God and Father of all, who is over all and through all and in all. Ephesians 2: 4-6 (New International Version)
One of the more important goals for Paul was unity in the church. This applied not only to unity within each and every local congregation, but also to unity within the worldwide body of Christ. His letters, particularly when needed, pointedly challenge congregations to be united in the efforts and witness. His global efforts were not as successful, as it would appear that Jewish and Gentile Christians could never quite agree on what were the essentials of faith.
Here, the Apostle reminds readers (even those in the 21st century) that just as we serve One God (revealed to us as Father, Son, and Holy Spirit), so there is only one church in Christ. Just as our invitations to faith are individual and unique, so our expressions of faith in worship may be unique. However, this does not divide the body, but rather represents to the world the diversity that exists within the church that is under the Lordship of Christ, who alone serves as the head.
Unfortunately, we have not taken the Apostle's words to heart. We divide ourselves our denominational loyalty (based solely on a human institution), theological ideology (based solely on human interpretation), and objectives for ministry (based solely on human preference). The goal of the church has remained the same for 2000: represent Christ to a sin-sick world by not only heralding Good News, but also embodying it in the life we have because of Christ.