Amen Roger! I've seen plenty of people abuse and misuse the words of Jesus "go and sin no more" in John 8:11 to teach "sinless perfection." Jesus was telling her to go and leave her life of sin. She had been practicing adultery. Jesus cannot compromise his perfect holy standard, so of course He is not going to say, "go and just sin a little bit."
You sound like Nicodemus, "Can I go back into my mother's womb and be born again?" You are explaining things in your own understanding, in your intellect. Not with the spiritual mind of Christ.
Jesus did not call the woman an adulteress or a sinner. In fact, he said, "I don't condemn you."
No, when Jesus said, "Go, and sin no more," he was
commanding she wouldn't sin anymore! Like he commanded the wind and the sea to obey him, ("Peace, be still!") Jesus was now Lord of this woman's life. She was set free! She was renewed spiritually! She was a new creation! She was no longer under the label "adulteress." She was a child of God.
And no man could condemn her because they all sulked away from Jesus in fear that they would be exposed. Their own hearts condemned them. They believed they were sinners. She didn't believe that lie anymore.
As long as people feel they are obeying God like servants, rather than saints following him as friends, they are like the prodigal son, "If my father would take me on as a servant, at least I will have someplace to live and won't perish." When you finally realize that Jesus is
Lord of your life, you won't worry about falling away from him. The kingdom of heaven is within you, and if you are a vessel of the Holy Spirit, the god of this world can't abide in you. You are a saint.
Honestly, I'm absolutely astonished that so many Christians are still walking like babes, believing God isn't faithful or awesome enough to keep them and make them more into the image of his son. I'm so sad right now thinking how grieved Jesus was when people just couldn't get it into their hearts that he was genuinely Lord of all. That he was able to keep them from falling away from him.