The book of Ephesians is Paul’s clearest and greatest appeal to unity in Christ, despite all the forces that would otherwise tear us apart. Ever since the Tower of Babel, human beings have been proliferating in their diversity, and gathering in camps and tribes that often become at odds with each other. The Christians of Ephesus were tempted to allow their differences with one another compromise their unity and their common witness to the world. The prevalent use of the word “one” in this scripture passage underscores Paul’s call for Christians to be one together.