Hmmmm, let's take a look ...
John 8:30-48 (ESV) wrote:As he was saying these things, many believed in him.
So Jesus said to the Jews who had believed him, “If you abide in my word, you are truly my disciples, and you will know the truth, and the truth will set you free.” They answered him, “We are offspring of Abraham and have never been enslaved to anyone. How is it that you say, ‘You will become free’?”
Jesus is speaking specifically to the Jews who had believed him, not some other group. And they are at least confused, but probably offended, when Jesus says that they - good religious folks that they are - are enslaved and need to be set free by the truth.
Jesus answered them, “Truly, truly, I say to you, everyone who practices sin is a slave to sin. The slave does not remain in the house forever; the son remains forever. So if the Son sets you free, you will be free indeed. I know that you are offspring of Abraham; yet you seek to kill me because my word finds no place in you. I speak of what I have seen with my Father, and you do what you have heard from your father.”
He is speaking to the same group, Jews who had come to believe in him. And he is speaking to them as a group - I suspect not all wanted to kill him, but some did. And he seems to be pushing them away as he speaks by being very, very clear.
I suspect that their initial belief was superficial, and Jesus is putting it to the test.
They answered him, “Abraham is our father.” Jesus said to them, “If you were Abraham's children, you would be doing the works Abraham did, but now you seek to kill me, a man who has told you the truth that I heard from God. This is not what Abraham did. You are doing the works your father did.” They said to him, “We were not born of sexual immorality. We have one Father—even God.” Jesus said to them, “If God were your Father, you would love me, for I came from God and I am here. I came not of my own accord, but he sent me.
It's not clear to me exactly what Jesus was accusing them of, but certainly part of it is that they just don't get it, they don't believe him, they want to defend their religious turf more than they want to be transformed disciples.
Why do you not understand what I say? It is because you cannot bear to hear my word. You are of your father the devil, and your will is to do your father's desires. He was a murderer from the beginning, and does not stand in the truth, because there is no truth in him. When he lies, he speaks out of his own character, for he is a liar and the father of lies. But because I tell the truth, you do not believe me. Which one of you convicts me of sin? If I tell the truth, why do you not believe me? Whoever is of God hears the words of God. The reason why you do not hear them is that you are not of God.”
Sigh. I really wish I could say that there is no lying or deception among Christians. I think it would be truer to say that every one of us deceives ourself almost every day, and only the Holy Spirit can show us the truth. Self-deception is a major theme in John, from the beginning to the end of the Gospel, with God trying to reveal himself to people who do not recognize him and just don't get it. Even the disciples just don't get it. Even after the resurrection.
So along with repenting for sin, I think we should lay down our own self-deception in prayer every day. It is so easy to build a religious, self-righteous wall around our own self-deception. "I praise God that I'm not like that tax collector over there", because I get it, and he doesn't ... that's a peculiar form of self-righteousness that is sometimes confused with having certainty in our faith.
The Jews answered him, “Are we not right in saying that you are a Samaritan and have a demon?”
These days, we usually reserve that for each other ... we're less likely to say that directly to Jesus.