In the New Testament, you'll find a host of terms that identify the followers of Jesus, but there is one metaphor used more frequently than any other. Slave . . . Now you can learn why this word best described early Christ-followers and you'll see how an understanding of this truth changes the way to follow Him now. This discovery will unveil the riches of your salvation in a radically new way. . . . [U]se this study guide to drill down through each major concept in Dr. John MacArthur's remarkable book Slave.
The gospel is not simply an invitation to become Christ's associate or friend -- it is a mandate to become His slave.