The second half of the Epistle to the Ephesians begins with a command to “make every effort to keep yourselves united in the Spirit” (Eph. 4:3 NLT). Given some of the things the Apostle Paul wrote about the work of Christ in chapters 1-3, this is no surprise. In this sermon, we begin our study of what it means to “walk in a manner worthy of the calling to which you have been called” (Eph. 4:1). As we work through Ephesians 4:1-6, we consider why unity is so important, and then what we need to do to keep it.