James 3:2-4

2For we all stumble in many things. If anyone does not stumble in word, he is a perfect man, able also to bridle the whole body.

3Indeed, we put bits in horses’ mouths that they may obey us, and we turn their whole body.

4Look also at ships: although they are so large and are driven by fierce winds, they are turned by a very small rudder wherever the pilot desires.