John 8:31-34

So Jesus was saying to the Jews who had believed Him, “If you abide in My word [continually obeying My teachings and living in accordance with them, then] you are truly My disciples. And you will know the truth [regarding salvation], and the truth will set you free [from the penalty of sin].” They answered Him, “We are Abraham’s descendants and have never been enslaved to anyone. What do You mean by saying, ‘You will be set free’?” Jesus answered, “I assure you and most solemnly say to you, everyone who practices sin habitually is a slave of sin.