Because they live in mortal bodies, Christians remain vulnerable to sin, which must dominate and subdue them. Unlike Greek thought, which viewed the body and material world as evil, Paul affirms the unity of the person and that the body can and should be used by God as a force for good (13). The Christian life involves an ongoing tension between sin and God. There is no middle ground, no room for neutrality, or as the proverb says, “you cannot serve two masters.” “Whoever is not with me is against me” (Mt 12:30). Paul illustrates this tension with the most potent image he has—one that he knows will resonate with his readers: the image of slavery. Many Christians in Rome were likely actual slaves. Two types of slavery are presented to Christians as choices in life: slavery to sin or slavery to Christ. Sin leads its servants to death. In contrast, “obedience” to Christ—where he no longer refers to slavery—results in salvation and, through it, life.