Romans 6:16-17

6:16 Do 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? 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,

John 8:34

8:34 Jesus answered them, “I tell you the solemn truth, everyone who practices sin is a slave of sin.