Romans 6:16-20

16Don’t you know that if you offer yourselves to someone as obedient slaves, you are slaves of that one you obey  — either of sin leading to death or of obedience leading to righteousness?

17But thank God that, although you used to be slaves of sin, you obeyed from the heart that pattern of teaching to which you were handed over,

18and having been set free from sin, you became enslaved to righteousness.

19I am using a human analogy because of the weakness of your flesh. For just as you offered the parts of yourselves as slaves to impurity, and to greater and greater lawlessness, so now offer them as slaves to righteousness, which results in sanctification.

20For when you were slaves of sin, you were free with regard to righteousness.