"The Liberating Truth about Truth" -Imagine being so deceived that you are talking to God in the flesh (Jesus) and claiming to be a child of God while denying that Jesus is God's Son. If the Jews mentioned in John 8 were actually God's children as they suggested to Jesus that they were, why didn't they recognize Jesus as God's Son? This allows us to see that it's possible to be deceived about things that we believe as being the truth and refuse to accept The Truth when it confronts wrong beliefs in our hearts. Only the truth that is revealed to us by the Spirit of Truth will make us free.
