25 "Who are you?" they asked. "Just what I have been telling you from the beginning," Jesus replied. 26 "I have much to say in judgment of you. But he who sent me is trustworthy, and what I have heard from him I tell the world." 27 They did not understand that he was telling them about his Father. 28 So Jesus said, "When you have lifted up  the Son of Man, then you will know that I am he and that I do nothing on my own but speak just what the Father has taught me. 29 The one who sent me is with me; he has not left me alone, for I always do what pleases him." 30 Even as he spoke, many believed in him.
The Truth Shall Make You Free
31 To the Jews who had believed him, Jesus said, "If you hold to my teaching, you are really my disciples. 32 Then you will know the truth, and the truth will set you free." 33 They answered him, "We are Abraham's descendants and have never been slaves of anyone. How can you say that we shall be set free?" 34 Jesus replied, "Very truly I tell you, everyone who sins is a slave to sin. 35 Now a slave has no permanent place in the family, but a son belongs to it forever. 36 So if the Son sets you free, you will be free indeed. 37 I know that you are Abraham's descendants. Yet you are looking for a way to kill me, because you have no room for my word.
Your Father the Devil
39 "Abraham is our father," they answered. "If you were Abraham's children," said Jesus, "then you would  do what Abraham did. 40 As it is, you are looking for a way to kill me, a man who has told you the truth that I heard from God. Abraham did not do such things. 41 You are doing the works of your own father." "We are not illegitimate children," they protested. "The only Father we have is God himself." 42 Jesus said to them, "If God were your Father, you would love me, for I have come here from God. I have not come on my own; God sent me. 43 Why is my language not clear to you? Because you are unable to hear what I say. 44 You belong to your father, the devil, and you want to carry out your father's desires. He was a murderer from the beginning, not holding to the truth, for there is no truth in him. When he lies, he speaks his native language, for he is a liar and the father of lies. 45 Yet because I tell the truth, you do not believe me!
46 Can any of you prove me guilty of sin? If I am telling the truth, why don't you believe me? 47 Whoever belongs to God hears what God says. The reason you do not hear is that you do not belong to God."
Before Abraham Was, I Am
48 The Jews answered him, "Aren't we right in saying that you are a Samaritan and demon-possessed?" 49 "I am not possessed by a demon," said Jesus, "but I honor my Father and you dishonor me. 50 I am not seeking glory for myself; but there is one who seeks it, and he is the judge.
51 Very truly I tell you, whoever obeys my word will never see death." 52 At this they exclaimed, "Now we know that you are demon-possessed! Abraham died and so did the prophets, yet you say that whoever obeys your word will never taste death. 53 Are you greater than our father Abraham? He died, and so did the prophets. Who do you think you are?" 54 Jesus replied, "If I glorify myself, my glory means nothing. My Father, whom you claim as your God, is the one who glorifies me. 55 Though you do not know him, I know him. If I said I did not, I would be a liar like you, but I do know him and obey his word. 56 Your father Abraham rejoiced at the thought of seeing my day; he saw it and was glad." 57 "You are not yet fifty years old," they said to him, "and you have seen Abraham!" 58 "Very truly I tell you," Jesus answered, "before Abraham was born, I am!" 59 At this, they picked up stones to stone him, but Jesus hid himself, slipping away from the temple grounds.
8:28 The Greek for "lifted up" also means "exalted" .
8:38 Or "presence. Therefore do what you have heard from the Father."
8:39 Some early manuscripts ""If you are Abraham's children," said Jesus, "then"