This is an effect of the work of Christ. It is seen in type in Ex. 13:2, when the firstborn were not only delivered from being Pharaoh’s slaves, but became God’s property being purchased by blood. So the Christian, by the same death that frees him from Satan’s power and claims, from sin, judgment, and hell, also becomes the absolute property of Christ, and that by purchase (1 Cor. 6:20), so that even his body is not his own, but the Lord’s. This is a side of the work of Christ, of which we know little, the practical power of it is seen in Rom. 12:1, when as a consequence, the willing yielding of my body to God follows as a reasonable service.