James 3:1-3
The Power of the Tongue
3:1 Not many of you should become teachers, my brothers and sisters, because you know that we will be judged more strictly.
3:2 For we all stumble in many ways. If someone does not stumble in what he says, he is a perfect individual, able to control the entire body as well.
3:3 And if we put bits into the mouths of horses to get them to obey us, then we guide their entire bodies.