James said that not many of his readers would become teachers. Teachers are held to higher standards. However, most people make a lot of mistakes. The only ones who don’t make mistakes in speaking have control of their tongues. You can control the whole body of a horse by putting a bridle in its mouth. This is just like the ships with their rudders. You are able to control large sailing ships with a small rudder directed by a pilot. Do you have control over your body?