James 3:3

3We put bits in the horses’ mouths. By these two comparisons he proves that a great part of true perfection is in the tongue, and that it exercises dominion, as he has just said, over the whole life. He compares the tongue, first, to a bridle, and then to a helm of a ship. Though a horse be a ferocious animal, yet he is turned about at the will of its rider, because he is bridled; no less can the tongue serve to govern man. So also with regard to the helm of a ship, which guides a large vessel and surmounts the impetuosity of winds. Though the tongue be a small member, yet it avails much in regulating the life of man.