Jesus's Sermon on the Mount is a tough pill to swallow. He is taking the Law, which was probably a heavy burden for many at the time already, and making it worse. Why? So that nobody can be righteous? Of course not. Those who want to make themselves right by rigid adherence to the Law are in the wrong kingdom. In the Kingdom of Jesus, following Jesus gets the life of the Law and the Life in the Spirit together, and that is transformational.