James 3:3-5

For if we put bits into the mouths of horses, that they may obey us: and we turn about their whole body.

Behold also ships, whereas they are great and are driven by strong winds, yet are they turned about with a small helm, whithersoever the force of the governor willeth.

Even so the tongue is indeed a little member and boasteth great things. Behold how small a fire kindleth a great wood.