Romans 6:16-18

16 Or know ye not that to whom ye present yourselves servants to obey, his servants ye are to whom ye obey, whether of sin unto death or of the obedience unto righteousness?

17 Thank God that, although ye were the servants of sin, ye have obeyed from the heart that form of doctrine unto which ye are delivered;

18 and freed from sin, ye are become the servants of righteousness.