John 8:34

34Jesus answered them, Truly, truly, I say to you, aeveryone who practices sin is a slave
Greek bondservant; also verse 35
to sin.

Romans 6:16-17

16Do you not know that if you present yourselves cto anyone as obedient slaves,
For the contextual rendering of the Greek word doulos, see Preface (twice in this verse and verse 19; also once in verses 17, 20)
you are slaves of the one whom you obey, either of sin, which leads to death, or of obedience, which leads to righteousness?
17But ethanks be to God, that you who were once slaves of sin have become obedient from the heart to the fstandard of teaching to which you were committed,
Copyright information for ESV