Practicing sin is slavery despite claims of freedom.

John 8:31–36

³¹Then said Jesus to those Jews which believed on him, If ye continue in my word, then are ye my disciples indeed;

³²And ye shall know the truth, and the truth shall make you free.

³³They answered him, We be Abraham’s seed, and were never in bondage to any man: how sayest thou, Ye shall be made free?

³⁴Jesus answered them, Verily, verily, I say unto you, Whosoever committeth sin is the servant of sin.

³⁵And the servant abideth not in the house for ever: but the Son abideth ever.

³⁶If the Son therefore shall make you free, ye shall be free indeed.