John 8:30-36

30 When he said this a number came to have faith in him.

31 Then Jesus said to the Jews who had faith in him, If you keep my word, then you are truly my disciples;

32 And you will have knowledge of what is true, and that will make you free.

33 They said to him in answer, We are Abraham's seed and have never been any man's servant: why do you say, You will become free?

34 And this was the answer Jesus gave them: Truly I say to you, Everyone who does evil is the servant of sin.

35 Now the servant does not go on living in the house for ever, but the son does.

36 If then the son makes you free, you will be truly free.