Freedom consists in power to follow unhindered the law of our being. So sin is slavery because it is contrary to that law.
When Jesus promised freedom through the truth, the Jews indignantly spurned the offer with the proud boast, which the presence of a Roman garrison in Jerusalem should have made to stick in their throats: We were never in bondage to any man.' A like hardy shutting of eyes to plain facts characterizes the attitude of multitudes to the Christian view of man's condition. Jesus answered the Jews by the deep saying: He that committeth sin is the servant of sin.' A man fancies himself showing off his freedom by throwing off the restraints of morality or law, and by doing as he likes,' but he is really showing his servitude. Self-will looks like liberty, but it is serfdom. The libertine is a slave. That slavery under sin takes two forms. The man who sins is a slave to the power of sin. Will and conscience are meant to guide and impel us, and we never sin without first coercing or silencing them and subjecting them to the upstart tyranny of desires and senses which should obey and not command. The beggars' are on horseback, and the princes' walking. There is a servile revolt, and we know what horrors accompany that.
But that slavery under sin is shown also by the terrible force with which any sin, if once committed, appeals to the doer to repeat it. It is not only in regard to sensual sins that the awful insistence of habit grips the doer, and makes it the rarest thing that evil once done is done only once.
But he who sins is also a slave to the guilt of sin. True, that sense of guilt is for the most part and in most men dormant, but the snake is but hibernating, and often wakes and stings at most unexpected moments. The deceitfulness of sin' lies to the sinner, so that for the most part he wipes his mouth, saying I have done no harm,' but some chance incident may at any time, and certainly something will at some time, dissipate the illusion, as a stray sunbeam might scatter a wisp of mist and show startled eyes the grim fact that had always been there. And even while not consciously felt, guilt hampers the soul's insight into divine realities, clips its wings so that it cannot soar, paralyses its efforts after noble aims, and inclines it to ignoble groveling as far away from thoughts of God and goodness as may be.
Christ makes the man bound and tied by the cords of his sins lift himself up and stand erect. By His death He brings forgiveness which removes guilt and the consciousness of it. By His inbreathed life He gives a new nature akin to His own, and brings into force a new motive, even transforming love, which is stronger than the death with which sin has cursed its doers. The law of the Spirit of Life in Christ Jesus has made me free from the law of sin and death.'