Romans 6:17-19
6:17 But thanks be to God that though you were slaves to sin, you obeyed from the heart that pattern of teaching you were entrusted to,
6:18 and having been freed from sin, you became enslaved to righteousness.
6:19 (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.