The New Testament finds many ways to depict Christians' relationships to their Lord. They are his disciples, sons, daughters, friends. But it is perhaps too little recognised that they are also his slaves. This study sets out to uncover what it means to be a slave of Christ. Harris begins by assessing the nature of actual slavery in the Greco-Roman world and the New Testament's attitude towards it. Drawing insights from this, he goes on to unfold the metaphor of slavery to Christ. Among the topics discussed are slavery and spiritual freedom, lordship, ownership and privilege.