Imagine Jesus as a director of a company that accepts all sincere applicants. The director assumes responsibility for all the mistakes his employees make, but he doesn't assume responsibility for people who only claim to be employees. People who purposely commit crimes get fired and applications by people who apply with the purpose of commiting crimes get rejected for not being sincere. (That's not to say someone who once was fired can't reapply if they're actually sincere about it, but since God sees into people's hearts and minds, you can't trick him.)