Williams(i)
16 Do you not know that when you habitually offer yourselves to anyone for obedience to him, you are slaves to that one whom you are in the habit of obeying, whether it is the slavery to sin whose end is death or to obedience whose end is right-doing?
17 But, thank God, that though you once were slaves of sin, you became obedient from your hearts to that form of teaching in which you have been instructed,
18 and since you have been freed from sin, you have become the slaves of right-doing.