Romans 6:16-20

Do you not know that the one to whom you present yourselves as slaves for obedience, you are slaves of that same one whom you obey, either of sin resulting in death, or of obedience resulting in righteousness?

But thanks be to God that though you were slaves of sin, you became obedient from the heart to that form of teaching to which you were entrusted,

and after being freed from sin, you became slaves to righteousness.

I am speaking in human terms because of the weakness of your flesh. For just as you presented the parts of your body as slaves to impurity and to lawlessness, resulting in further lawlessness, so now present your body’s parts as slaves to righteousness, resulting in sanctification.

For when you were slaves of sin, you were free in relation to righteousness.