Romans 6:17-19

MLV(i) 17 But gratitude to God, that, though you were bondservants of sin, you obeyed from the heart the pattern of teaching to which you were given; 18 and having been made free from sin, you were enslaved to righteousness.
19 I speak in human terms because of the weakness of your flesh; for just-as you presented your members as bondservants to uncleanness and to lawlessness leading to more lawlessness, so now present your members as bondservants to righteousness leading to holiness.