The Pharisees taught that you became a sinner when you allowed what was outside you in the sinful world into your life. But the teaching of Jesus was the opposite. Jesus had been speaking only to the Pharisees, but this was so important that he called the crowd over to him so that everyone could hear what he had to say.Jesus tells them clearly that nothing that enters a person from the outside can defile them, but instead, the things that defile us come from inside ourselves, from our own hearts.