Romans 6:16-20

16Do you not know that if you present yourselves as obedient slaves, you are slaves of the one you obey, either of sin resulting in death, or obedience resulting in righteousness?

17But thanks be to God that though you were slaves to sin, you obeyed from the heart that pattern of teaching you were entrusted to,

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

19(I am speaking in human terms because of the weakness of your flesh.) For just as you once presented your members as slaves to impurity and lawlessness leading to more lawlessness, so now present your members as slaves to righteousness leading to sanctification.

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